Library of Congress Classification System A General Works AC Collections AE Encyclopedias AG Dictionaries AI Indexes AM Museums AN Newspapers AP Periodicals AS Academies and learned societies AY Yearbooks, Almanacs, Directories AZ History of Scholarship, The humanities B Philosophy, Psychology, Religion B Philosophy (General) BC Logic BD Speculative philosophy BF Psychology BH Aesthetics BJ Ethics BL Religion, Mythology, Rationalism BM Judaism BP Islam, Bahaism, Theosophy, etc. BQ Buddhism BR Christianity BS Bible BT Doctrinal theology BV Practical theology BX Christian denominations C Auxiliary Sciences of History (General) CB History of civilization CC Archaeology CD Diplomatics, Archives, Seals CE Technical chronology, Calendar CJ Numismatics CN Incriptions, Epigraphy CR Heraldry CS Genealogy CT Biography D History (General) and History of Europe D History (General) DA Great Britain DAW Central Europe DB Austria, Liechtenstein, Hungary, Czechoslovakia DC France, Andorra, Monaco DD Germany DE Greco-Roman World DF Greece DG Italy, Malta DH Low countries, Benelux countries DJ Netherlands (Holland) DJK Eastern Europe (General) DK Russia, Soviet Union, Former Soviet Republics, Poland DL Northern Europe, Scandinavia DP Spain, Portugal DQ Switzerland DR Balkan Peninsula, Turkey DS Asia DT Africa DU Oceania (South Seas) DX Gypsies E-F History: America E America, United States F United States local history, Canada, Latin America G Geography, Anthropology, Recreation G Geography (General), Atlases, Maps GA Mathematical geography, Cartography GB Physical geography GC Oceanography GE Environmental sciences GF Human ecology, Anthropogeography GN Anthropology GR Folklore GT Manners and Customs (General) GV Recreation, Leisure H Social Sciences H Social Sciences (General) HA Statistics HB Economic theory, Demography HC Economic History and Conditions HD Industries, Land use, Labor HE Transportation and communication HF Commerce HG Finance HJ Public finance HM Sociology (General) HN Social History and conditions, Social Problems, Social reform HQ The Family, Marriage, Women HS Societies: secret, benevolent, etc. HT Communities, Classes, Races HV Social pathology, Social and public welfare, Criminology HX Socialism, Communism, Anarchism J Political Science J General Legislative and executive papers JA Political Science (General) JC Political theory JF Political Institutions and public administration—General JK Political Institutions and public administration—United States JL Political Institutions and public administration—Canada, Latin America JN Political Institutions and public administration—Europe JQ Political Institutions and public administration—Asia, Africa, Atlantic Ocean islands, Oceania JS Local government, Municipal government JV Colonies and colonization, Emigration and immigration, International migration JZ International relations K Law K General, Comparative and uniform law, Jurisprudence KB Religious Law in general, Comparative religious law, Jurisprudence KBM Jewish law KBP Islamic law KBR History of canon law KBU Law of the Roman Catholic Church, The Holy See KBX Law of Protestant Churches KD United Kingdom and Ireland KDZ America, North America KE Canada KF United States KG Latin America, Mexico and Central America, West Indies KH South America KJ- KKZ Europe KL- KWX Asia, Africa, Pacific Area, Antarctica KZ Law of nations L Education L Education (General) LA History of education LB Theory and practice of education LC Special aspects of education LD Individual institutions—United States LE Individual institutions—America (except United States) LF Individual institutions—Europe LG Individual institutions—Asia, Africa, Oceania LH College and school Magazines and papers LJ Student fraternities and societies, United States LT Textbooks M Music M Musical Works ML Literature on music MT Musical instruction and study N Fine Arts N Visual arts NA Architecture NB Sculpture NC Drawing, Design Illustration ND Painting NE Print media NK Decorative arts NX Arts in general P Language and Literature P Philology, Linguistics PA Greek and Latin languages and literatures PB Modern languages, Celtic languages PC Romanic languages PD Germanic languages, Scandinavian languages PE English language PF West Germanic languages PG Slavic, Baltic, Albanian languages and literatures PH Uralic, Basque languages and literatures PJ Oriental languages and literatures PK Indo-Iranian languages and literatures PL Languages and literatures of Eastern Asia, Africa, Oceania PM Hyperborean, Indian and artificial languages PN Literature (General) PQ French, Italian, Spanish and Portuguese Literatures PR English literature PS American literature PT German, Dutch and Scandinavian literatures PZ Fiction, Juvenile belles lettres Q Science Q Science (General) QA Mathematics QB Astronomy QC Physics QD Chemistry QE Geology QH Natural history, Biology QK Botany QL Zoology QM Human anatomy QP Physiology QR Microbiology R Medicine R Medicine (General) RA Public aspects of medicine RB Pathology RC Internal medicine RD Surgery RE Ophthalmology RF Otorhinolaryngology RG Gynecology and obstetrics RJ Pediatrics RK Dentistry RL Dermatology RM Therapeutics, Pharmacology RS Pharmacy and materia medica RT Nursing RV Botanic, Thomsonian and eclectic medicine RX Homeopathy RZ Other Systems of medicine S Agriculture S Agriculture (General) SB Plant culture SD Forestry SF Animal culture SH Aquaculture, Fisheries, Angling SK Hunting Sports T Technology T Technology (General) TA Engineering (General), Civil engineering TC Hydraulic engineering, Ocean engineering TD Environmental technology, Sanitary engineering TE Highway engineering, Roads and pavements TF Railroad engineering and operation TG Bridge engineering TH Building construction TJ Mechanical engineering and machinery TK Electrical engineering, Electronics, Nuclear engineering TL Motor vehicles, Aeronautics, Astronautics TN Mining engineering, Metallurgy TP Chemical technology TR Photography TS Manufactures TT Handicrafts, Arts and crafts TX Home economics, Hospitality industry U Military Science (for military history, see D-F) U Military Science (General) UA Armies: Organization, distribution, military situation UB Military administration UC Maintenance and transportation UD Infantry UE Cavalry, Armor UF Artillery UG Military engineering, air forces UH Other services V Naval Science (for naval history, see D-F) V Naval Science (General) VA Navies: organization, distribution, naval situation VB Naval administration VC Naval maintenance VD Naval seamen VE Marines VF Naval ordnance VG Minor services of navies VK Navigation, Merchant marine VM Naval architecture, Shipbuilding, Marine engineering Z Bibliography, Library Science, Information Resources Z Books (General) Writing, Paleography, Book industries and trade, libraries, Bibliography ZA Information resources (General)