List of Dewey Decimal classes

TheDewey Decimal Classification(DDC) is structured around ten main classes covering the entire world ofknowledge;each main class is further structured into tenhierarchicaldivisions, each having ten divisions of increasing specificity.^[1]As a system oflibrary classificationthe DDC is "arranged by discipline, not subject", so a topic likeclothingis classed based on its disciplinary treatment (psychological influence of clothing at 155.95, customs associated with clothing at 391, and fashion design of clothing at 746.92) within the conceptual framework.^[2]The list below presents the ten main classes, hundred divisions, and thousand sections.^[3]

Class 000 – Computer science, information, and general works

000 Computer science, knowledge, and systems
- 000Computer science,information and general works
- 001Knowledge
- 002 Thebook(writing, libraries, and book-related topics)
- 003Systems
- 004Data processingandcomputer science
- 005Computer programming,programs,anddata
- 006 Special computer methods (e.g. AI, multimedia, VR)^[4]
- 007–009 [Unassigned]
010Bibliographies
- 010 Bibliography
- 011 Bibliographies
- 012 Bibliographies of individuals
- 013 [Unassigned]
- 014 Bibliographies ofanonymousandpseudonymousworks
- 015 Bibliographies of works from specific places
- 016 Bibliographies of works on specific subjects
- 017 General subject catalogs
- 018 Catalogs arranged by author, date, etc. [moved to 017]
- 019Dictionarycatalogs [moved to 017]
020Library and information sciences
- 020 Library and information sciences
- 021 Library relationships (witharchives,information centers, etc.)
- 022 Administration of physical plant
- 023Personnel management
- 024 [Unassigned]
- 025Library operations
- 026 Libraries for specific subjects
- 027 General libraries
- 028Readingand use of other information media
- 029 [Unassigned]
030 Encyclopedias and books of facts
- 030 Generalencyclopedicworks
- 031 Encyclopedias inAmerican English
- 032 Encyclopedias inEnglish
- 033 Encyclopedias in otherGermanic languages
- 034 Encyclopedias inFrench,Occitan,andCatalan
- 035 Encyclopedias inItalian,Romanian,and related languages
- 036 Encyclopedias inSpanishandPortuguese
- 037 Encyclopedias inSlavic languages
- 038 Encyclopedias inScandinavian languages
- 039 Encyclopedias in other languages
040 Unassigned(formerlyBiographies)
050 Magazines, journals and serials
- 050 General serial publications
- 051 Serials in American English
- 052 Serials in English
- 053 Serials in other Germanic languages
- 054 Serials in French, Occitan, and Catalan
- 055 Serials in Italian, Romanian, and related languages
- 056 Serials in Spanish and Portuguese
- 057 Serials in Slavic languages
- 058 Serials in Scandinavian languages
- 059 Serials in other languages
060 Associations, organizations and museums
- 060 General organizations and museum science
- 061 Organizations inNorth America
- 062 Organizations inBritish Isles;inEngland
- 063 Organizations incentral Europe;inGermany
- 064 Organizations inFranceandMonaco
- 065 Organizations inItalyand adjacent islands
- 066 Organizations inIberian Peninsulaand adjacent islands
- 067 Organizations ineastern Europe;inRussia
- 068 Organizations in other geographic areas
- 069Museum science
070News media,journalism,andpublishing
- 070 News media, journalism, and publishing
- 071 Newspapers in North America
- 072 Newspapers in British Isles; in England
- 073 Newspapers in central Europe; in Germany
- 074 Newspapers in France and Monaco
- 075 Newspapers in Italy and adjacent islands
- 076 Newspapers in Iberian peninsula and adjacent islands
- 077 Newspapers in eastern Europe; in Russia
- 078 Newspapers in Scandinavia
- 079 Newspapers in other geographic areas
080Quotations
- 080 General collections
- 081 Collections in American English
- 082 Collections in English
- 083 Collections in other Germanic languages
- 084 Collections in French, Occitan, Catalan
- 085 Collections in Italian, Romanian, and related languages
- 086 Collections in Spanish and Portuguese
- 087 Collections in Slavic languages
- 088 Collections in Scandinavian languages
- 089 Collections in other languages
090Manuscriptsand rare books
- 090 Manuscripts and rare books
- 091 Manuscripts
- 092Block books
- 093Incunabula
- 094Printed books
- 095 Books notable forbindings
- 096 Books notable for illustrations
- 097 Books notable for ownership or origin
- 098Prohibited works,forgeries,andhoaxes
- 099 Books notable for format

Class 100 – Philosophy and psychology

100Philosophy
- 100 Philosophy andpsychology
- 101 Theory of philosophy
- 102 Miscellany
- 103 Dictionaries and encyclopedias
- 104No longer used — formerlyEssays
- 105Serial publications
- 106 Organizations andmanagement
- 107Education,research,related topics of philosophy
- 108 Groups ofpeople
- 109Historyand collected biography
110Metaphysics
- 110 Metaphysics
- 111Ontology
- 112No longer used — formerlyMethodology
- 113Cosmology(Philosophy of nature)
- 114Space
- 115Time
- 116 Change
- 117 Structure
- 118Forceandenergy
- 119 Number and quantity
120Epistemology
- 120 Epistemology, causation, and humankind
- 121 Epistemology (Theory of knowledge)
- 122 Causation
- 123Determinismandindeterminism
- 124Teleology
- 125No longer used — formerlyInfinity
- 126The self
- 127 The unconscious and the subconscious
- 128Humankind
- 129 Origin and destiny of individualsouls
130Parapsychologyandoccultism
- 130 Parapsychology and occultism
- 131 Parapsychological and occult methods for achieving well-being, happiness, success
- 132No longer used — formerly "Mental derangements"
- 133 Specific topics in parapsychology and occultism
- 134No longer used — formerly "MesmerismandClairvoyance"
- 135Dreamsand mysteries
- 136No longer used — formerly "Mental characteristics"
- 137 Divinatorygraphology
- 138Physiognomy
- 139Phrenology
140Philosophical schools of thought
- 140 Specific philosophical schools and viewpoints
- 141Idealismand related systems and doctrines
- 142Critical philosophy
- 143Bergsonismandintuitionism
- 144Humanismand related systems and doctrines
- 145Sensationalism
- 146Naturalismand related systems and doctrines
- 147Pantheismand related systems and doctrines
- 148Dogmatism,eclecticism,liberalism, syncretism, andtraditionalism
- 149 Other philosophical systems and doctrines
150Psychology
- 150 Psychology
- 151No longer used — formerly "Intellect"
- 152 Sensoryperception,movement,emotions,and physiological drives
- 153 Conscious mental processes andintelligence
- 154Subconsciousandaltered statesand processes
- 155Differentialanddevelopmental psychology
- 156Comparative psychology
- 157No longer used — formerly "Emotions"
- 158Applied psychology
- 159No longer used — formerly "Will"
160 Philosophicallogic
- 160 Philosophical logic
- 161Induction
- 162Deduction
- 163–164Not assigned or no longer used
- 165Fallaciesand sources of error
- 166Syllogisms
- 167Hypotheses
- 168Argumentandpersuasion
- 169Analogy
170Ethics
- 170 Ethics (Moral philosophy)
- 171 Ethical systems
- 172Political ethics
- 173 Ethics offamily relationships
- 174 Occupational ethics
- 175 Ethics ofrecreation,leisure,public performances, communication
- 176 Ethics ofsexandreproduction
- 177 Ethics ofsocial relations
- 178 Ethics ofconsumption
- 179 Other ethical norms
180Ancient,medieval,andEastern philosophy
- 180 Ancient, medieval, eastern philosophy
- 181 Eastern philosophy
- 182Pre-Socratic Greek philosophies
- 183 Sophistic,Socratic,related Greek philosophies
- 184Platonic philosophy
- 185Aristotelian philosophy
- 186SkepticandNeoplatonic philosophies
- 187Epicurean philosophy
- 188Stoic philosophy
- 189 Medieval Western philosophy
190 ModernWestern philosophy(19th-century,20th-century)
- 190 Modern Western and other noneastern philosophy
- 191Philosophy of the United StatesandCanada
- 192Philosophy of the British Isles
- 193Philosophy of GermanyandAustria
- 194Philosophy of France
- 195Philosophy of Italy
- 196 Philosophy ofSpainand Portugal
- 197Philosophy of Russia
- 198 Philosophy of Scandinavia and Finland
- 199 Philosophy in other geographic areas

Class 200 – Religion

200Religion
- 200 Religion
- 201 Religiousmythology,general classes of religion,interreligious relationsand attitudes, social theology
- 202Doctrines
- 203 Publicworshipand other practices
- 204 Religious experience, life, practice
- 205Religious ethics
- 206Leadersandorganization
- 207 Missions andreligious education
- 208 Sources
- 209Sectsand reform movements
210 Philosophy and theory of religion
- 210 Philosophy and theory of religion
- 211Concepts of God
- 212Existence,ways of knowing God, attributes of God
- 213Creation
- 214Theodicy
- 215Science and religion
- 216No longer used—formerlyEvil
- 217No longer used—formerlyPrayer
- 218Humankind
- 219No longer used—formerlyAnalogies
220 TheBible
- 220 Bible
- 221Old Testament(Tanakh)
- 222Historical booksof Old Testament
- 223Poetic booksof Old Testament
- 224Prophetic booksof Old Testament
- 225New Testament
- 226GospelsandActs
- 227Epistles
- 228Revelation(Apocalypse)
- 229Apocrypha,pseudepigrapha,and inter-testamental works
230Christianity
- 230 Christianity
- 231God
- 232Jesus Christand his family
- 233 Humankind
- 234Salvationandgrace
- 235 Spiritual beings
- 236Eschatology
- 237No longer used—formerly Future state
- 238Creeds,confessions of faith,covenants,andcatechisms
- 239Apologeticsandpolemics
240 Christian practice and observance
- 240 Christian moral and devotional theology
- 241Christian ethics
- 242Devotional literature
- 243Evangelisticwritings for individuals and families
- 244No longer used—formerlyReligious fiction
- 245No longer used—formerlyHymnology
- 246 Use ofart in Christianity
- 247Churchfurnishings and related articles
- 248Christian experience, practice, life
- 249 Christian observances in family life
250 Christianordersand local church
- 250 Local Christian church and Christian religious orders
- 251 Preaching (Homiletics)
- 252 Texts ofsermons
- 253 Pastoral office and work (Pastoral theology)
- 254Parishadministration
- 255Religious congregationsand orders
- 256No longer used — formerly Religious societies
- 257No longer used — formerlyParochial schools,libraries, etc.
- 258No longer used — formerly Parochial medicine
- 259 Pastoral care of families, of specific groups of people
260 Social and ecclesiastical theology
- 260 Christian social and ecclesiastical theology
- 261 Social theology and interreligious relations and attitudes
- 262Ecclesiology
- 263 Days, times, places ofreligious observance
- 264 Public worship
- 265Sacraments,other rites and acts
- 266Missions
- 267 Associations for religious work
- 268Religious education
- 269 Spiritual renewal
270 History of Christianity
- 270 History, geographic treatment, biography of Christianity
- 271 Religious congregations and orders in church history
- 272Persecutionsin church history
- 273 Doctrinal controversies andheresies in general church history
- 274Christianity in Europe
- 275Christianity in Asia
- 276Christianity in Africa
- 277Christianity in North America
- 278Christianity in South America
- 279 History of Christianity in other areas
280Christian denominations
- 280 Denominations and sects of Christian church
- 281Early churchandEastern churches
- 282Roman CatholicChurch
- 283Anglicanchurches
- 284Protestantdenominations of Continental origin and related body
- 285Presbyterianchurches,Reformedchurches centered in America,Congregationalchurches
- 286Baptist,Restoration Movement,Adventistchurches
- 287Methodistchurches; churches related to Methodism
- 288No longer used — formerlyUnitarian
- 289 Other denominations and sects
290 Other religions
- 290 Other religions
- 291No longer used — formerly Comparative religion
- 292 Classical religion (GreekandRoman religion)
- 293Germanic religion
- 294Religions of Indic origin
- 295Zoroastrianism(Mazdaism, Parseeism)
- 296Judaism
- 297Islam,Bábism,andBaháʼí Faith
- 298No longer used — formerlyMormonism
- 299 Religions not provided for elsewhere

Class 300 – Social sciences

300Social sciences,sociology,andanthropology
- 300 Social sciences
- 301 Sociology and anthropology
- 302Social interaction
- 303 Social processes
- 304 Factors affecting social behavior
- 305Groups of people
- 306Cultureandinstitutions
- 307Communities
- 308No longer used — formerly "Polygraphy"
- 309No longer used — formerly "History of sociology"
310 Statistics
- 310 Collections of general statistics
- 311No longer used — formerly "Theory and methods"
- 312No longer used — formerly "Population"
- 313No longer used — formerly "Special topics"
- 314 General statistics of Europe
- 315 General statistics of Asia
- 316 General statistics of Africa
- 317 General statistics of North America
- 318 General statistics of South America
- 319 General statistics of Australasia, Pacific Ocean islands, Atlantic Ocean islands, Arctic islands, Antarctica
320Political science
- 320 Political science (Politics and government)
- 321Systems of governmentsand states
- 322 Relation ofstateto organized groups and their members
- 323Civilandpolitical rights
- 324 Thepoliticalprocess
- 325 Internationalmigrationandcolonization
- 326Slaveryandemancipation
- 327International relations
- 328 Thelegislativeprocess
- 329No longer used— formerly "Political Parties"
330Economics
- 330 Economics
- 331Labor economics
- 332Financial economics
- 333Economics of landand energy
- 334Cooperatives
- 335Socialismand related systems
- 336Public finance
- 337International economics
- 338Production
- 339Macroeconomicsand related topics
340Law
- 340 Law
- 341Law of nations
- 342Constitutionalandadministrative law
- 343Military,defense, public property, public finance,tax,commerce (trade),industrial law
- 344Labor,social service, education, cultural law
- 345Criminal law
- 346Private law
- 347Procedureandcourts
- 348Laws,regulations,cases
- 349Law of specific jurisdictions, areas,socioeconomic regions, regional intergovernmental organizations
350Public administrationandmilitary science
- 350 Public administration and military science
- 351 Public administration
- 352 General considerations of public administration
- 353 Specific fields of public administration
- 354 Public administration of economy and environment
- 355Military science
- 356Foot forcesand warfare
- 357Mounted forcesand warfare
- 358Airand other specialized forces and warfare; engineering and related services
- 359Sea forcesand warfare
360 Social problems andsocial services
- 360 Social problems and services; associations
- 361 Social problems and services
- 362 Social problems of and services to groups of people
- 363 Other social problems and services
- 364Criminology
- 365Penaland related institutions
- 366 Secret associations and societies
- 367 Generalclubs
- 368Insurance
- 369 Associations
370Education
- 370 Education
- 371 Schools and their activities,special education
- 372 Primary education (elementary education)
- 373Secondary education
- 374Adult education
- 375Curriculum
- 376No longer used — formerly "Education of women"
- 377No longer used — formerly "Ethical education"
- 378Higher education(Tertiary education)
- 379 Public policy issues in education
380Commerce,communicationsandtransportation
- 380 Commerce, communications transportation
- 381 Commerce (Trade)
- 382International commerce(Foreign trade)
- 383Postal communication
- 384 Communications
- 385Railroad transportation
- 386 Inlandwaterwayandferrytransportation
- 387Water,air,space transportation
- 388 Transportation
- 389Metrologyandstandardization
390Customs,etiquetteandfolklore
- 390 Customs, etiquette, folklore
- 391Costumeandpersonal appearance
- 392 Customs of life cycle and domestic life
- 393Death customs
- 394General customs
- 395 Etiquette (Manners)
- 396No longer used — formerly "Women's position and treatment"
- 397No longer used — formerly "outcaststudies "
- 398Folklore
- 399 Customs of war anddiplomacy

Class 400 – Language

400Language
- 400 Language
- 401Philosophyand theory, international languages
- 402 Miscellany
- 403Dictionaries,encyclopedias,concordances
- 404 Special topics of language
- 405 Serial publications
- 406 Organizations and management
- 407Education,research, related topics
- 408 Groups of people
- 409 Geographic treatment and biography
410Linguistics
- 410 Linguistics
- 411Writing systemsof standard forms of languages
- 412Etymologyof standard forms of languages
- 413Dictionariesof standard forms of languages
- 414Phonologyand phonetics of standard forms of languages
- 415Grammarof standard forms of languages
- 416No longer used — formerly "Prosody"
- 417Dialectologyandhistorical linguistics
- 418 Standard usage (Prescriptive linguistics)
- 419Sign languages
420EnglishandOld Englishlanguages
- 420 English andOld English (Anglo-Saxon)
- 421Writing system,phonology,phonetics of standard English
- 422 Etymology of standard English
- 423 Dictionaries of standard English
- 424No longer used — formerly "Englishthesauruses"
- 425Grammarof standard English
- 426No longer used — formerly "English prosodies"
- 427 Historical and geographical variations, modern nongeographic variations of English
- 428 Standard English usage (Prescriptive linguistics)
- 429Old English(Anglo-Saxon)
430Germanand related languages
- 430 German and related languages
- 431Writing systems,phonology,phonetics of standard German
- 432 Etymology of standard German
- 433 Dictionaries of standard German
- 434Not assigned or no longer used
- 435Grammarof standard German
- 436Not assigned or no longer used
- 437 Historical and geographic variations, modern nongeographic variations of German
- 438 Standard German usage (Prescriptive linguistics)
- 439 Other Germanic languages
440Frenchand related languages
- 440 French and related Romance languages
- 441Writing systems,phonology,phonetics of standard French
- 442 Etymology of standard French
- 443 Dictionaries of standard French
- 444Not assigned or no longer used
- 445Grammarof standard French
- 446Not assigned or no longer used
- 447 Historical and geographic variations, modern nongeographic variations of French
- 448 Standard French usage (Prescriptive linguistics)
- 449 OccitanCatalan,Franco-Provençal
450Italian,Romanianand related languages
- 450 Italian,Dalmatian,Romanian,Rhaetian,Sardinian,Corsican
- 451 Writing systems,phonology,phonetics of standard Italian
- 452 Etymology of standard Italian
- 453 Dictionaries of standard Italian
- 454Not assigned or no longer used
- 455Grammarof standard Italian
- 456Not assigned or no longer used
- 457 Historical and geographic variations, modern nongeographic variations of Italian
- 458 Standard Italian usage (Prescriptive linguistics)
- 459 Romanian, Rhaetian, Sardinian, Corsican
460Spanish,Portuguese,Galician
- 460 Spanish, Portuguese, Galician
- 461Writing systems,phonology,phonetics of standard Spanish
- 462 Etymology of standard Spanish
- 463 Dictionaries of standard Spanish
- 464Not assigned or no longer used
- 465Grammarof standard Spanish
- 466Not assigned or no longer used
- 467 Historical and geographic variations, modern nongeographic variations of Spanish
- 468 Standard Spanish usage (Prescriptive linguistics)
- 469Portuguese
470LatinandItalic languages
- 470 Latin and related Italic languages
- 471 Writing systems, phonology, phonetics ofclassical Latin
- 472 Etymology of classical Latin
- 473 Dictionaries of classical Latin
- 474Not assigned or no longer used
- 475Grammarof classical Latin
- 476Not assigned or no longer used
- 477Old,postclassical,Vulgar Latin
- 478 Classical Latin usage (Prescriptive linguistics)
- 479 Other Italic languages
480 Classical and modernGreek languages
- 480 Classical Greek and related Hellenic languages
- 481 Writing systems,phonology,phonetics of classical Greek
- 482 Etymology of classical Greek
- 483 Dictionaries of classical Greek
- 484Not assigned or no longer used
- 485 Grammar of classical Greek
- 486Not assigned or no longer used
- 487Preclassicalandpostclassical Greek
- 488 Classical Greek usage (Prescriptive linguistics)
- 489 Other Hellenic languages
490 Other languages
- 490 Other languages
- 491 East Indo-European andCeltic languages
- 492Afro-Asiatic languages
- 493 Non-Semitic Afro-Asiatic languages
- 494Altaic,Uralic,Hyperborean,Dravidian languages,miscellaneous languages of south Asia
- 495 Languages of East and Southeast Asia
- 496African languages
- 497North American native languages
- 498South American native languages
- 499 Non-Austronesian languages of Oceania, Austronesian languages, miscellaneous languages

Class 500 – Science

500Science
- 500Natural sciencesand mathematics
- 501 Philosophy and theory
- 502 Miscellany
- 503 Dictionaries,encyclopedias,concordances
- 504Not assigned or no longer used
- 505 Serial publications
- 506 Organizations and management
- 507 Education, research, related topics
- 508Natural history
- 509History,geographic treatment,biography
510Mathematics
- 510 Mathematics
- 511 General principles of mathematics
- 512Algebra
- 513Arithmetic
- 514Topology
- 515Analysis
- 516Geometry
- 517Not assigned or no longer used
- 518Numerical analysis
- 519Probabilitiesandapplied mathematics
520Astronomy
- 520Astronomyand allied sciences
- 521Celestial mechanics
- 522 Techniques, procedures, apparatus, equipment, materials
- 523 Specificcelestial bodiesand phenomena
- 524Not assigned or no longer used
- 525Earth(Astronomical geography)
- 526 Mathematical geography
- 527Celestial navigation
- 528Ephemerides
- 529Chronology
530Physics
- 530 Physics
- 531 Classicalmechanics
- 532Fluid mechanics
- 533Pneumatics(Gas mechanics)
- 534Soundand relatedvibrations
- 535Lightand related radiation
- 536Heat
- 537Electricityandelectronics
- 538Magnetism
- 539Modern physics
540Chemistry
- 540 Chemistry and allied sciences
- 541Physical chemistry
- 542 Techniques, procedures, apparatus, equipment, materials
- 543Analytical chemistry
- 544No longer used — formerly "Qualitative analysis"
- 545No longer used — formerly "Quantitative analysis"
- 546Inorganic chemistry
- 547Organic chemistry
- 548Crystallography
- 549Mineralogy
550Earth sciencesandgeology
- 550 Earth sciences
- 551Geology,hydrology,meteorology
- 552Petrology
- 553Economic geology
- 554 Earth sciences of Europe
- 555 Earth sciences of Asia
- 556 Earth sciences of Africa
- 557 Earth sciences of North America
- 558 Earth sciences of South America
- 559 Earth sciences of Australasia, Pacific Ocean islands, Atlantic Ocean islands, Arctic islands, Antarctica, extraterrestrial worlds
560Fossilsand prehistoric life
- 560Paleontology
- 561Paleobotany,fossil microorganisms
- 562 Fossil invertebrates
- 563 Miscellaneous fossil marine and seashore invertebrates
- 564 Fossil Mollusca and Molluscoidea
- 565 Fossil Arthropoda
- 566 Fossil Chordata
- 567 Fossil cold-blooded vertebrates
- 568 Fossil Aves (birds)
- 569 Fossil Mammalia
570Biology
- 570 Biology
- 571Physiologyand related subjects
- 572Biochemistry
- 573 Specific physiological systems in animals, regional histology and physiology in animals
- 574Not assigned or no longer used
- 575 Specific parts of andphysiological systems in plants
- 576Geneticsandevolution
- 577Ecology
- 578Natural historyoforganismsand related subjects
- 579 Natural history ofmicroorganisms,fungi,algae
580 Plants
- 580 Plants
- 581 Specific topics in natural history ofplants
- 582 Plants noted for specific vegetative characteristics andflowers
- 583 Magnoliopsida (Dicotyledones)
- 584 Liliopsida (Monocotyledones)
- 585 Pinophyta (Gymnosperms)
- 586Cryptogamia(Seedless plants)
- 587Pteridophyta
- 588Bryophyta
- 589No longer used—formerlyForestry
590Animals(Zoology)
- 590 Animals
- 591 Specific topics in natural history of animals
- 592Invertebrates
- 593 Miscellaneous marine and seashore invertebrates
- 594Molluscaand Molluscoidea
- 595Arthropoda
- 596Chordata
- 597Cold-bloodedvertebrates
- 598Aves(Birds)
- 599Mammalia(Mammals)

Class 600 – Technology

600Technology
- 600 Technology (Applied sciences)
- 601 Philosophy and theory
- 602 Miscellany
- 603 Dictionaries, encyclopedias, concordances
- 604 Technical drawing, hazardous materials technology; groups of people
- 605 Serial publications
- 606 Organizations
- 607 Education, research, related topics
- 608Patents
- 609History,geographic treatment, biography
610Medicineandhealth
- 610 Medicine and health
- 611Human anatomy,cytology,histology
- 612Human physiology
- 613 Personal health and safety
- 614Forensic medicine;incidence of injuries, wounds, disease; public preventive medicine
- 615Pharmacologyandtherapeutics
- 616Diseases
- 617Surgery,regional medicine,dentistry,ophthalmology,otology,audiology
- 618Gynecology,obstetrics, pediatrics, geriatrics
- 619No longer used—formerlyExperimental medicine
620Engineering
- 620 Engineering and applied operations
- 621Applied physics
- 622Miningand related operations
- 623Militaryandnautical engineering
- 624Civil engineering
- 625 Engineering ofrailroads,roads
- 626Not assigned or no longer used
- 627Hydraulic engineering
- 628Sanitary engineering
- 629 Other branches of engineering
630Agriculture
- 630 Agriculture and related technologies
- 631 Specific techniques; apparatus,equipment,materials
- 632 Plant injuries,diseases,pests
- 633Fieldandplantation crops
- 634Orchards,fruits,forestry
- 635 Garden crops (Horticulture)
- 636Animal husbandry
- 637 Processingdairyand related products
- 638 Insect culture
- 639Hunting,fishing,conservation,related technologies
640 Home and family management
- 640 Home and family management
- 641Foodanddrink
- 642Mealsand table service
- 643Housingand household equipment
- 644Householdutilities
- 645Household furnishings
- 646Sewing,clothing,management of personal and family life
- 647Management of public households(Institutional housekeeping)
- 648Housekeeping
- 649Child rearing;home careof people with disabilities and illnesses
650Managementand public relations
- 650 Management and auxiliary services
- 651Officeservices
- 652 Processes of written communication
- 653Shorthand
- 654–656Not assigned or no longer used
- 657Accounting
- 658 General management
- 659Advertisingandpublic relations
660Chemical engineering
- 660 Chemical engineering and related technologies
- 661 Technology of industrial chemicals
- 662 Technology ofexplosives,fuels,related products
- 663 Beverage technology
- 664Food technology
- 665 Technology of industrialoils,fats,waxes,gases
- 666Ceramicand allied technologies
- 667Cleaning,color,coating, related technologies
- 668 Technology of other organic products
- 669Metallurgy
670Manufacturing
- 670 Manufacturing
- 671Metalworkingprocesses and primary metal products
- 672Iron,steel,otheriron alloys
- 673 Nonferrousmetals
- 674Lumberprocessing,woodproducts,cork
- 675Leatherandfurprocessing
- 676Pulp and paper technology
- 677Textiles
- 678Elastomersand elastomer products
- 679 Other products of specific kinds of materials
680 Manufacture for specific uses
- 680 Manufacture of products for specific uses
- 681Precision instrumentsand other devices
- 682 Smallforgework (Blacksmithing)
- 683Hardwareandhousehold appliances
- 684 Furnishings and homeworkshops
- 685 Leather and fur goods, and related products
- 686Printingand related activities
- 687Clothingand accessories
- 688 Other final products, andpackagingtechnology
- 689Not assigned or no longer used
690 Construction ofbuildings
- 690 Construction of buildings
- 691 Building materials
- 692 Auxiliary construction practices
- 693 Construction in specific types of materials and for specific purposes
- 694Wood construction
- 695Roofcovering
- 696 Utilities
- 697Heating,ventilating,air-conditioningengineering
- 698 Detail finishing
- 699Not assigned or no longer used

Class 700 – Arts and recreation

700Arts
- 700 The Arts
- 701Philosophyandtheoryof fine and decorative arts
- 702 Miscellany of fine and decorative arts
- 703 Dictionaries, encyclopedias, concordances of fine and decorative arts
- 704 Special topics in fine and decorative arts
- 705Serial publicationsof fine and decorative arts
- 706 Organizations and management of fine and decorative arts
- 707 Education, research, related topics of fine and decorative arts
- 708Galleries, museums, private collectionsof fine and decorative arts
- 709History,geographic treatment, biography
710 Area planning andlandscape architecture
- 710 Area planning and landscape architecture
- 711Area planning(Civic art)
- 712Landscape architecture(Landscape design)
- 713 Landscape architecture of trafficways
- 714Water featuresin landscape architecture
- 715Woody plantsin landscape architecture
- 716Herbaceous plantsin landscape architecture
- 717 Structures in landscape architecture
- 718 Landscape design of cemeteries
- 719 Naturallandscapes
720Architecture
- 720 Architecture
- 721 Architectural materials and structural elements
- 722 Architecture from earliest times toc. 300
- 723 Architecture fromc. 300to 1399
- 724 Architecture from 1400
- 725 Public structures
- 726Buildings for religious and related purposes
- 727 Buildings for educational and research purposes
- 728Residential and related buildings
- 729Designanddecorationof structures and accessories
730Sculpture,ceramics and metalwork
- 730 Sculpture and related arts
- 731 Processes, forms, subjects of sculpture
- 732 Sculpture from earliest times toc. 500,sculpture of non-literate peoples
- 733Greek, Etruscan, Roman sculpture
- 734 Sculpture from ca 500 to 1399
- 735 Sculpture from 1400
- 736Carvingand carvings
- 737Numismaticsandsigillography
- 738Ceramic arts
- 739 Art metalwork
740 Graphic arts anddecorative arts
- 740 Graphic arts
- 741 Drawing and drawings
- 742Perspectivein drawing
- 743 Drawing and drawings by subject
- 744 Communication design and visual design (proposed^[5])
- 745 Decorative arts
- 746Textile arts
- 747Interior decoration
- 748Glass
- 749Furnitureand accessories
750Painting
- 750 Painting andpaintings
- 751 Techniques, procedures, apparatus, equipment, materials, forms
- 752Color
- 753Symbolism,allegory,mythology,legend
- 754Genre paintings
- 755Religion
- 756Not assigned or no longer used
- 757 Human figures
- 758 Nature, architectural subjects and cityscapes, other specific subjects
- 759History,geographic treatment, biography
760Printmakingand prints
- 760 Printmaking and prints
- 761 Relief processes (Block printing)
- 762Not assigned or no longer used
- 763Lithographicprocesses (Planographic processes)
- 764Chromolithographyandserigraphy
- 765Metal engraving
- 766Mezzotinting,aquatinting, and related processes
- 767Etchinganddrypoint
- 768Not assigned or no longer used
- 769 Prints
770Photography,computer art, film, video
- 770 Photography, computer art, cinematography, videography
- 771Techniques,procedures, apparatus,equipment,materials
- 772 Metallic salt processes
- 773 Pigment processes of printing
- 774No longer used—formerlyHolography
- 775No longer used—formerlyDigital photography
- 776Computer art(Digital art)
- 777CinematographyandVideography
- 778 Specific fields and special kinds of photography
- 779Photographic images
780Music
- 780 Music
- 781General principlesandmusical forms
- 782Vocal music
- 783 Music for single voices
- 784InstrumentsandInstrumental ensemblesand their music
- 785 Ensembles with only one instrument per part
- 786Keyboard,mechanical, electrophonic, percussion instruments
- 787Stringed instruments(Chordophones)
- 788Wind instruments(Aerophones)
- 789Not assigned or no longer used
790Sports,games and entertainment
- 790 Recreational and performing arts
- 791 Public performances
- 792 Stage presentations
- 793Indoor gamesand amusements
- 794 Indoor games of skill
- 795 Games of chance
- 796 Athletic and outdoor sports and games
- 797 Aquatic and air sports
- 798Equestrian sportsand animal racing
- 799Fishing,hunting,shooting

Class 800 – Literature

800Literature,rhetoricandcriticism
- 800 Literature (Belles-lettres) and rhetoric
- 801 Philosophy and theory
- 802 Miscellany
- 803 Dictionaries, encyclopedias, concordances
- 804Not assigned or no longer used
- 805Serial publications
- 806 Organizations and management
- 807 Education, research, related topics
- 808 Rhetoric and collections of literary texts from more than two literatures
- 809History,description, critical appraisal of more than two literatures
810American literaturein English
- 810 American literature in English
- 811 Americanpoetryin English
- 812 American drama in English
- 813 American fiction in English
- 814 American essays in English
- 815 American speeches in English
- 816 American letters in English
- 817 American humor and satire in English
- 818 American miscellaneous writings in English
- 819No longer used—formerly Puzzle activities
820EnglishandOld English literatures
- 820 English andOld English (Anglo-Saxon) literatures
- 821 English poetry
- 822English drama
- 823 English fiction
- 824 English essays
- 825 English speeches
- 826 English letters
- 827 English humor and satire
- 828 English miscellaneous writings
- 829 Old English (Anglo-Saxon) literature
830Germanand related literatures
- 830 German literature and literatures of related languages
- 831German poetry
- 832 German drama
- 833 German fiction
- 834 German essays
- 835 German speeches
- 836 German letters
- 837 German humor and satire
- 838 German miscellaneous writings
- 839 Other Germanic literatures
840 French and related literatures
- 840 French literature and literatures of related Romance languages
- 841French poetry
- 842 French drama
- 843 French fiction
- 844 French essays
- 845 French speeches
- 846 French letters
- 847 French humor and satire
- 848 French miscellaneous writings
- 849Occitan,Catalan,Franco-Provençal literatures
850Italian,Romanianand related literatures
- 850 Literatures of Italian, Dalmatian, Romanian, Rhaetian, Sardinian, Corsican languages
- 851Italian poetry
- 852 Italian drama
- 853 Italian fiction
- 854 Italian essays
- 855 Italian speeches
- 856 Italian letters
- 857 Italian humor and satire
- 858 Italian miscellaneous writings
- 859 Literatures of Romanian, Rhaetian, Sardinian, Corsican languages
860Spanish,Portuguese,Galician literatures
- 860 Literatures of Spanish, Portuguese, Galician languages
- 861Spanish poetry
- 862 Spanish drama
- 863 Spanish fiction
- 864 Spanish essays
- 865 Spanish speeches
- 866 Spanish letters
- 867 Spanish humor and satire
- 868 Spanish miscellaneous writings
- 869 Literatures of Portuguese and Galician languages
870Latinand Italic literatures
- 870 Latin literature and literatures of related Italic languages
- 871Latin poetry
- 872 Latin dramatic poetry and drama
- 873 Latin epic poetry and fiction
- 874 Latin lyric poetry
- 875 Latin speeches
- 876 Latin letters
- 877 Latin humor and satire
- 878 Latin miscellaneous writings
- 879 Literatures of other Italic languages
880 Classical and modern Greek literatures
- 880 Classical Greek literature and literatures of related Hellenic languages
- 881 Classical Greek poetry
- 882 Classical Greek drama
- 883 Classical Greek epic poetry and fiction
- 884 Classical Greek lyric poetry
- 885 Classical Greek speeches
- 886 Classical Greek letters
- 887 Classical Greek humor and satire
- 888 Classical Greek miscellaneous writings
- 889Modern Greek literature
890 Other literatures
- 890 Literatures of other specific languages and language families
- 891 East Indo-European andCelticliteratures
- 892Afro-Asiaticliteratures
- 893 Non-Semitic Afro-Asiatic literatures
- 894 Literatures of Altaic, Uralic, Hyperborean,Dravidianlanguages; literatures of miscellaneous languages of South Asia
- 895 Literatures of East and Southeast Asia
- 896 African literatures
- 897 Literatures of North American native languages
- 898 Literatures of South American native languages
- 899 Literatures of non-Austronesian languages of Oceania, of Austronesian languages, of miscellaneous languages

Class 900 – History and geography

900History
- 900 History, geography, and auxiliary disciplines
- 901 Philosophy and theory of history
- 902 Miscellany of history
- 903 Dictionaries, encyclopedias, concordances of history
- 904 Collected accounts of events
- 905 Serial publications of history
- 906 Organizations and management of history
- 907 Education, research, related topics of history
- 908 History with respect to groups of people
- 909World history
910Geographyandtravel
- 910 Geography and travel
- 911Historical geography
- 912Graphic representations of surface of Earthand of extraterrestrial worlds
- 913 Geography of and travel in theancient world
- 914 Geography of and travel inEurope
- 915 Geography of and travel inAsia
- 916 Geography of and travel inAfrica
- 917 Geography of and travel inNorth America
- 918 Geography of and travel inSouth America
- 919 Geography of and travel in Australasia, Pacific Ocean islands, Atlantic Ocean islands, Arctic islands, Antarctica, and on extraterrestrial worlds
920Biographyandgenealogy
- 920 Biography, genealogy, insignia
- 921–928 This range is reserved as an optional location for biographies, which are shelved alphabetically by subject's last name.
- 929 Genealogy,names,insignia
930History of ancient world (toc. 499)
- 930 History of ancient world toc. 499
- 931Chinato420
- 932Egyptto640
- 933Palestineto70
- 934South Asiato 647
- 935MesopotamiaandIranian Plateauto637
- 936Europe north and west of Italian Peninsulatoc. 499
- 937Italy and adjacent territoriesto476
- 938Greeceto 323
- 939 Other parts of ancient world
940History of Europe
- 940 History of Europe
- 941British Isles
- 942EnglandandWales
- 943Germanyand neighboringcentral European countries
- 944FranceandMonaco
- 945Italy,San Marino, Vatican City, Malta
- 946Spain,Andorra, Gibraltar,Portugal
- 947Russiaandneighboring east European countries
- 948Scandinavia
- 949 Other parts of Europe
950History of Asia
- 950 History of Asia
- 951Chinaand adjacent areas
- 952Japan
- 953Arabian Peninsulaand adjacent areas
- 954Indiaand neighboringsouth Asian countries
- 955Iran
- 956Middle East(Near East)
- 957Siberia(Asiatic Russia)
- 958Central Asia
- 959Southeast Asia
960History of Africa
- 960 History of Africa
- 961TunisiaandLibya
- 962Egypt,Sudan,South Sudan
- 963Ethiopiaand Eritrea
- 964Morocco,Ceuta, Melilla Western Sahara,Canary Islands
- 965Algeria
- 966West Africaand offshore islands
- 967Central Africaand offshore islands
- 968South Africa& southern Africa
- 969 SouthIndian Oceanislands
970History of North America
- 970 History of North America
- 971Canada
- 972Mexico,Central America,West Indies, Bermuda
- 973United States
- 974Northeastern United States(New England and Middle Atlantic states)
- 975 Southeastern United States (South Atlantic states)
- 976 South central United States
- 977 North central United States
- 978 Western United States
- 979 Great Basin and Pacific Slope region of United States
980History of South America
- 980 History of South America
- 981Brazil
- 982Argentina
- 983Chile
- 984Bolivia
- 985Peru
- 986ColombiaandEcuador
- 987Venezuela
- 988Guiana
- 989ParaguayandUruguay
990 History of other areas
- 990 History of Australasia, Pacific Ocean islands, Atlantic Ocean islands, Arctic islands, Antarctica, extraterrestrial worlds
- 991–992Not assigned or no longer used
- 993New Zealand
- 994Australia
- 995New Guineaand neighboring countries ofMelanesia
- 996Polynesiaand other Pacific Ocean islands
- 997 Atlantic Ocean islands
- 998 Arctic islands andAntarctica
- 999 Extraterrestrial worlds

References

^DDC Frequently Asked Questions
^Introduction to theDewey Decimal Classification (23rd edition)
^Summary lists ofDewey Decimal Classification,23rd edition (2011)
^"000 Computer science, information, general works"(PDF).OCLC.Retrieved2022-01-08.
^"EPC 143-S74.1 Graphic design and communication design".OCLC.Retrieved2023-01-29.

External links

A Classification and Subject Index for Cataloguing and Arranging the Books and Pamphlets of a Library,1st edition (1876) atProject Gutenberg

[1] DDC Frequently Asked Questions

[2] Introduction to theDewey Decimal Classification (23rd edition)

[3] Summary lists ofDewey Decimal Classification,23rd edition (2011)

[4] "000 Computer science, information, general works"(PDF).OCLC.Retrieved2022-01-08.

[5] "EPC 143-S74.1 Graphic design and communication design".OCLC.Retrieved2023-01-29.

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