Codes of a library classification system
TheDewey Decimal Classification (DDC) is structured around ten main classes covering the entire world ofknowledge; each main class is further structured into tenhierarchical divisions, each having ten divisions of increasing specificity.[1] As a system oflibrary classification the DDC is "arranged by discipline, not subject", so a topic likeclothing is 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
[edit]- 000 Computer science, knowledge, and systems
- 010 Bibliographies
- 010Bibliography
- 011 Bibliographies
- 012 Bibliographies of individuals
- 013 [Unassigned]
- 014 Bibliographies ofanonymous andpseudonymous works
- 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]
- 019Dictionary catalogs [moved to 017]
- 020Library and information sciences
- 030 Encyclopedias and books of facts
- 040 Unassigned— formerly Biographies
- 050 Magazines, journals and serials
- 050 Generalserial 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
- 070 News media, journalism, and publishing
- 070News media,journalism, andpublishing
- 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
- 090 Manuscripts and rare books
Class 100 – Philosophy and psychology
[edit]Class 200 – Religion
[edit]- 200Religion
- 210 Philosophy and theory of religion
- 220 The Bible
- 230 Christianity
- 240 Christian practice and observance
- 250 Christian orders and local church
- 260 Social and ecclesiastical theology
- 270 History of Christianity
- 280 Christian denominations
- 290 Other religions
Class 300 – Social sciences
[edit]- 300 Social sciences,sociology, and anthropology
- 310 Statistics
- 310 Collections ofgeneral statistics
- 311No longer used — formerly Theory and methods
- 312No longer used — formerly Population
- 313No longer used — formerly Special topics
- 314General 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
- 330Economics
- 340Law
- 340Law
- 341Law of nations
- 342Constitutional andadministrative law
- 343Military,defense, public property, public finance,tax, commerce (trade),industrial law
- 344Labor, social service, education, cultural law
- 345Criminal law
- 346Private law
- 347Procedure andcourts
- 348Laws,regulations,cases
- 349Law of specific jurisdictions, areas, socioeconomic regions, regional intergovernmental organizations
- 350 Public administration and military science
- 360 Social problems and social services
- 370Education
- 380 Commerce,communications andtransportation
- 390 Customs, etiquette and folklore
Class 400 – Language
[edit]- 400 Language
- 410Linguistics
- 420 English and Old English languages
- 430German and 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
- 435Grammar of 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
- 440French and 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
- 445Grammar of 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
- 450 Italian, Romanian and related languages
- 450Italian,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
- 455Grammar of 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
- 460 Spanish, Portuguese, Galician
- 460Spanish,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
- 465Grammar of standard Spanish
- 466Not assigned or no longer used
- 467 Historical and geographic variations, modern nongeographic variations of Spanish
- 468 Standard Spanish usage (Prescriptive linguistics)
- 469 Portuguese
- 470 Latin and Italic languages
- 480 Classical and modern Greek languages
- 480Classical Greek and relatedHellenic 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
- 487 Preclassical and postclassical Greek
- 488 Classical Greek usage (Prescriptive linguistics)
- 489 Other Hellenic languages
- 490 Other languages
Class 500 – Science
[edit]Class 600 – Technology
[edit]- 600Technology
- 610Medicine and health
- 610Medicine andhealth
- 611Human anatomy,cytology,histology
- 612Human physiology
- 613 Personal health andsafety
- 614Forensic medicine; incidence of injuries,wounds,disease;public preventive medicine
- 615Pharmacology andtherapeutics
- 616Diseases
- 617Surgery, regional medicine,dentistry,ophthalmology,otology,audiology
- 618Gynecology,obstetrics,pediatrics,geriatrics
- 619No longer used—formerlyExperimental medicine
- 620Engineering
- 630Agriculture
- 640 Home and family management
- 650 Management and public relations
- 660 Chemical engineering
- 670Manufacturing
- 680 Manufacture for specific uses
- 690 Construction of buildings
Class 700 – Arts and recreation
[edit]- 700 Arts
- 710 Area planning and landscape architecture
- 720Architecture
- 730Sculpture, ceramics and metalwork
- 740 Graphic arts and decorative arts
- 750 Painting
- 750Painting andpaintings
- 751 Techniques, procedures, apparatus, equipment, materials, forms
- 752Color
- 753Symbolism,allegory,mythology,legend
- 754Genre paintings
- 755Religion
- 756Not assigned or no longer used
- 757Human figures
- 758 Nature, architectural subjects andcityscapes, other specific subjects
- 759History, geographic treatment, biography
- 760 Printmaking and prints
- 770Photography, computer art, film, video
- 780Music
- 790Sports, games and entertainment
Class 800 – Literature
[edit]- 800Literature, rhetoric andcriticism
- 800Literature (Belles-lettres) andrhetoric
- 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
- 810 American literature in English
- 820English andOld English literatures
- 830 German and related literatures
- 830German literature and literatures of related languages
- 831German poetry
- 832 German drama
- 833 German fiction
- 834 German essays
- 835 German speeches
- 836 German letters
- 837German humor and satire
- 838 German miscellaneous writings
- 839 Other Germanic literatures
- 840 French and related literatures
- 840French 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
- 850 Italian, Romanian and related literatures
- 850 Literatures ofItalian, 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
- 860 Spanish, Portuguese, Galician literatures
- 860 Literatures ofSpanish,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
- 870 Latin and Italic literatures
- 870Latin 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 andCeltic literatures
- 892 Afro-Asiatic literatures
- 893 Non-Semitic Afro-Asiatic literatures
- 894 Literatures of Altaic, Uralic, Hyperborean, Dravidian languages; literatures of miscellaneous languages of South Asia
- 895 Literatures of East and Southeast Asia
- 896African literatures
- 897Literatures 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
[edit]- 900History
- 900History,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
- 910 Geography and travel
- 920 Biography and genealogy
- 920Biography,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
- 930 History of ancient world (toc. 499)
- 940 History of Europe
- 950 History of Asia
- 960 History of Africa
- 970 History of North America
- 980 History of South America
- 990 History of other areas
