Library of Congress Classification System

Class A – General Works

Main article: Library of Congress Classification:Class A — General Works

• Subclass AC– Collections. Series. Collected works
• Subclass AE– Encyclopedias
• Subclass AG– Dictionaries and other general reference works
• Subclass AI – Indexes
• Subclass AM – Museums. Collectors and collecting
• Subclass AN – Newspapers
• Subclass AP – Periodicals
• Subclass AS – Academies and learned societies
• Subclass AY – Yearbooks. Almanacs. Directories
• Subclass AZ – History of scholarship and learning. The humanities

 

Class B – Philosophy. Psychology. Religion

Main article: Library of Congress Classification:Class B — Philosophy, Psychology, Religion

• Subclass B – Philosophy(General)
• Subclass BC – Logic
• Subclass BD – Speculative philosophy
• Subclass BF – Psychology
• Subclass BH – Aesthetics
• Subclass BJ – Ethics
• Subclass BL – Religions. Mythology. Rationalism
• Subclass BM – Judaism
• Subclass BP – Islam. Bahaism. Theosophy, etc.
• Subclass BQ – Buddhism
• Subclass BR – Christianity
• Subclass BS – The Bible
• Subclass BT – Doctrinal theology
• Subclass BV – Practical Theology
• Subclass BX – Christian Denominations

 

Class C – Auxiliary Sciences of History

Main article: Library of Congress Classification:Class C — Auxiliary Sciences of History

• Subclass C – Auxiliary Sciences of History
• Subclass CB – History of Civilization
• Subclass CC – Archaeology
• Subclass CD – Diplomatics. Archives. Seals
• Subclass CE – Technical Chronology. Calendar
• Subclass CJ – Numismatics
• Subclass CN – Inscriptions. Epigraphy
• Subclass CR – Heraldry
• Subclass CS – Genealogy
• Subclass CT – Biography

 

Class D – World History and History of Europe, Asia, Africa, Australia, New Zealand, etc.

Main article: Library of Congress Classification:Class D — History, General and Old World

• Subclass D – History(General)
• Subclass DA – Great Britain
• Subclass DAW – Central Europe
• Subclass DB – Austria– Liechtenstein – Hungary – Czechoslovakia
• Subclass DC – France– Andorra – Monaco
• Subclass DD – Germany
• Subclass DE – Greco-Roman World
• Subclass DF – Greece
• Subclass DG – Italy– Malta
• Subclass DH – Low Countries – BeneluxCountries
• Subclass DJ – Netherlands(Holland)
• Subclass DJK – Eastern Europe(General)
• Subclass DK – Russia. Soviet Union. Former Soviet Republics– Poland
• Subclass DL – Northern Europe. Scandinavia
• Subclass DP – Spain– Portugal
• Subclass DQ – Switzerland
• Subclass DR – Balkan Peninsula
• Subclass DS – Asia
• Subclass DT – Africa
• Subclass DU – Oceania(South Seas)
• Subclass DX – Romanies

 

Class E – History of America

Main article: Library of Congress Classification:Class E — History of America

• Class E does not have any subclasses.

 

Class F – Local History of the Americas

Main article: Library of Congress Classification:Class F — Local History of the United States and British, Dutch, French, and Latin America

• Class F does not have any subclasses, however Canadian Universities and the Canadian National Library use FC for Canadian History, a subclass that the LC has not officially adopted, but which it has agreed not to use for anything else

 

Class G – Geography, Anthropology, Recreation

Main article: Library of Congress Classification:Class G — Geography. Anthropology. Recreation

• Subclass G– Geography (General). Atlases. Maps
• Subclass GA– Mathematical geography. Cartography
• Subclass GB– Physical geography
• Subclass GC– Oceanography
• Subclass GE – Environmental Sciences
• Subclass GF – Human ecology. Anthropogeography
• Subclass GN– Anthropology
• Subclass GR– Folklore
• Subclass GT– Manners and customs (General)
• Subclass GV– Recreation. Leisure

 

Class H – Social Sciences

Main article: Library of Congress Classification:Class H — Social sciences

• Subclass H – Social sciences(General)
• Subclass HA – Statistics
• Subclass HB– Economic theory. Demography
• Subclass HC – Economic historyand conditions
• Subclass HD– Industries. Land use. Labor
• Subclass HE– Transportation and communications
• Subclass HF– Commerce
• Subclass HG– Finance
• Subclass HJ– Public finance
• Subclass HM– Sociology (General)
• Subclass HN – Social historyand conditions. Social problems. Social reform
• Subclass HQ– The family. Marriage, Women and Sexuality
• Subclass HS– Societies: secret, benevolent, etc.
• Subclass HT– Communities. Classes. Races
• Subclass HV– Social pathology. Social and public welfare. Criminology
• Subclass HX – Socialism. Communism. Anarchism

 

Class J – Political Science

Main article: Library of Congress Classification:Class J — Political science

• Subclass J – General legislative and executive papers
• Subclass JA – Political science(General)
• Subclass JC – Political theory
• Subclass JF – Political institutionsand public administration
• Subclass JJ – Political institutions and public administration (North America)
• Subclass JK – Political institutions and public administration (United States)
• Subclass JL – Political institutions and public administration (Canada, Latin America, etc.)
• Subclass JN – Political institutions and public administration (Europe)
• Subclass JQ – Political institutions and public administration (Asia, Africa, Australia, Pacific Area, etc.)
• Subclass JS – Local government. Municipal government
• Subclass JV – Colonies and colonization. Emigration and immigration. International migration
• Subclass JX – International law, see JZ and KZ (obsolete)
• Subclass JZ – International relations

 

Class K – Law

Main article: Library of Congress Classification:Class K — Law

• Subclass K – Lawin general. Comparative and uniform law. Jurisprudence
• Subclass KB – Religious lawin general. Comparative religious law. Jurisprudence
• Subclass KBM – Jewish law
• Subclass KBP – Islamic law
• Subclass KBR – History of canon law
• Subclass KBS – Canon law of Eastern churches
• Subclass KBT – Canon law of Eastern Rite Churches in Communion with the Holy See of Rome
• Subclass KBU – Law of the Roman Catholic Church. The Holy See
• Subclasses – KD/KDK – United Kingdomand Ireland
• Subclass KDZ – America. North America
• Subclass KE – Canada
• Subclass KF – United States
• Subclass KG – Latin America– Mexico and Central America – West Indies. Caribbean area
• Subclass KH – South America
• Subclasses KJ-KKZ – Europe
• Subclasses KL-KWX – Asiaand Eurasia, Africa, Pacific Area, and Antarctica
• Subclass KU/KUQ – Law of Australiaand New Zealand
• Subclass KZ – Law of nations

 

Class L – Education

Main article: Library of Congress Classification:Class L — Education

• Subclass L – Education(General)
• Subclass LA – History of education
• Subclass LB – Theoryand practice of education
• Subclass LC – Special aspects of education
• Subclass LD – Individual institutions – United States
• Subclass LE – Individual institutions – America (except United States)
• Subclass LF – Individual institutions – Europe
• Subclass LG – Individual institutions – Asia, Africa, Indian Ocean islands, Australia, New Zealand, Pacific islands
• Subclass LH – College and school magazines and papers
• Subclass LJ – Student fraternitiesand societies, United States
• Subclass LT – Textbooks

 

Class M – Music

Main article: Library of Congress Classification:Class M — Music

• Subclass M – Music
• Subclass ML – Literature on music
• Subclass MT – Instruction and study

 

Class N – Fine Arts

Main article: Library of Congress Classification:Class N — Fine Arts

• Subclass N – Visual arts
• Subclass NA – Architecture
• Subclass NB – Sculpture
• Subclass NC – Drawing. Design. Illustration
• Subclass ND – Painting
• Subclass NE – Print media
• Subclass NK – Decorative arts
• Subclass NX – Arts in general

 

Class P – Language and Literature

Main article: Library of Congress Classification:Class P — Language and Literature

 

The PN-subclass shelf.

• Subclass P– Philology. Linguistics
• Subclass PA– Greek language and literature. Latin language and literature
• Subclass PB– Modern languages. Celtic languages and literature
• Subclass PC– Romanic languages
• Subclass PD– Germanic languages. Scandinavian languages
• Subclass PE– English language
• Subclass PF– West Germanic languages
• Subclass PG– Slavic languages and literatures. Baltic languages. Albanian language
• Subclass PH– Uralic languages. Basque language
• Subclass PJ– Oriental languages and literatures
• Subclass PK– Indo-Iranian languages and literatures
• Subclass PL– Languages and literatures of Eastern Asia, Africa, Oceania
• Subclass PM– Hyperborean, Native American, and artificial languages
• Subclass PN– Literature (General)
• Subclass PQ– French literature – Italian literature – Spanish literature – Portuguese literature
• Subclass PR– English literature
• Subclass PS– American literature
• Subclass PT– German literature – Dutch literature – Flemish literature since 1830 – Afrikaans literature –Scandinavian literature – Old Norse literature: Old Icelandic and Old Norwegian – Modern Icelandic literature – Faroese literature – Danish literature – Norwegian literature – Swedish literature
• Subclass PZ– Fiction and juvenile belles lettres

 

Class Q – Science

Main article: Library of Congress Classification:Class Q — Science

• Subclass Q – Science(General)
• Subclass QA – Mathematics
• Subclass QB – Astronomy
• Subclass QC – Physics
• Subclass QD – Chemistry
• Subclass QE – Geology
• Subclass QH – Natural history– Biology
• Subclass QK – Botany
• Subclass QL – Zoology
• Subclass QM – Human anatomy
• Subclass QP – Physiology
• Subclass QR – Microbiology

 

Class R – Medicine

Main article: Library of Congress Classification:Class R — Medicine

• Subclass R – Medicine(General)
• Subclass RA – Public aspects of medicine
• Subclass RB – Pathology
• Subclass RC – Internal medicine
• Subclass RD – Surgery
• Subclass RE – Ophthalmology
• Subclass RF – Otorhinolaryngology
• Subclass RG – Gynecologyand Obstetrics
• Subclass RJ – Pediatrics
• Subclass RK – Dentistry
• Subclass RL – Dermatology
• Subclass RM – Therapeutics. Pharmacology
• Subclass RS – Pharmacyand materia medica
• Subclass RT – Nursing
• Subclass RV – Botanic, Thomsonian, and Eclectic medicine
• Subclass RX – Homeopathy
• Subclass RZ – Other systems of medicine

 

Class S – Agriculture

Main article: Library of Congress Classification:Class S — Agriculture

• Subclass S – Agriculture(General)
• Subclass SB – Horticulture. Plant propagation. Plant breeding
• Subclass SD – Forestry. Arboriculture. Silviculture
• Subclass SF – Animal husbandry. Animal science
• Subclass SH – Aquaculture. Fisheries. Angling
• Subclass SK – Hunting

 

Class T – Technology

Main article: Library of Congress Classification:Class T — Technology

• Subclass T – Technology(General)
• Subclass TA – EngineeringCivil engineering (General).
• Subclass TC – Hydraulic engineering. Ocean engineering
• Subclass TD – Environmental technology. Sanitary engineering
• Subclass TE – Highway engineering. Roads and pavements
• Subclass TF – Railroad engineeringand operation
• Subclass TG – Bridges
• Subclass TH – Building construction
• Subclass TJ – Mechanical engineeringand machinery
• Subclass TK – Electrical engineering. Electronics. Nuclear engineering
• Subclass TL – Motor vehicles. Aeronautics. Astronautics
• Subclass TN – Mining engineering. Metallurgy
• Subclass TP – Chemical technology
• Subclass TR – Photography
• Subclass TS – Manufacturing engineering. Mass production
• Subclass TT – Handicrafts. Arts and crafts
• Subclass TX – Home economics

 

Class U – Military Science

Main article: Library of Congress Classification:Class U — Military Science

• Subclass U – Military science(General)
• Subclass UA – Armies: Organization, distribution, military situation
• Subclass UB – Military administration
• Subclass UC – Military maintenance and transportation
• Subclass UD – Infantry
• Subclass UE – Cavalry. Armor
• Subclass UF – Artillery
• Subclass UG – Military engineering. Air forces
• Subclass UH – Other military services

 

 

Class V – Naval Science

Main article: Library of Congress Classification:Class V — Naval Science

• Subclass V – Naval science (General)
• Subclass VA – Navies: Organization, distribution, naval situation
• Subclass VB – Naval administration
• Subclass VC – Naval maintenance
• Subclass VD – Naval seamen
• Subclass VE – Marines
• Subclass VF – Naval ordnance
• Subclass VG – Minor services of navies
• Subclass VK – Navigation. Merchant marine
• Subclass VM – Naval architecture. Shipbuilding. Marine engineering

 

Class Z – Bibliography, Library Science

Main article: Library of Congress Classification:Class Z — Bibliography. Library Science. Information resources

• Subclass Z – Books (General). Writing. Paleography. Book industries and trade. Bibliography
• Subclass ZA – Information resources/materials