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Library of CongressLibrary of Congress
Classification System Classification System
This classification system began as a way to This classification system began as a way to place book with similar subjects in categories. place book with similar subjects in categories.
The system has 21 different classes identified The system has 21 different classes identified by a single letter of the alphabet.by a single letter of the alphabet.
Each class further divided by subject into Each class further divided by subject into
subclasses using two letters. subclasses using two letters.
http://www.loc.gov/catdir/cpso/lcc.html
Library of Congress Classification System Library of Congress Classification System
Locating MaterialLocating Material
Books are shelved alphabeticallyBooks are shelved alphabetically..Click on the link.Click on the link.
Single letters of a call number come before doSingle letters of a call number come before double lettersuble letters
. . Click on the link.Click on the link.
After the letters, the number further identify theAfter the letters, the number further identify the topics topics
. . Click on the link.Click on the link.
http://www.lib.uidaho.edu/instruction/student_instruct.htm
Let’s take a good Let’s take a good look at the 21 LOC look at the 21 LOC Classes and their Classes and their
subclassessubclasses..
http://www.loc.gov/catdir/cpso/lcc.html
General WorksGeneral Works
Library of Congress Library of Congress
SubclassesSubclassesAC Collections. Series. Collected works AC Collections. Series. Collected works
AE Encyclopedias AE Encyclopedias
AG Dictionaries and other general reference worksAG Dictionaries and other general reference works
AI Indexes AI Indexes
AM Museums. Collectors and collecting AM Museums. Collectors and collecting
AN NewspapersAN Newspapers
AP Periodicals AP Periodicals
AS Academies and learned societiesAS Academies and learned societies
AY Yearbooks. Almanacs. DirectoriesAY Yearbooks. Almanacs. Directories
AZ History of scholarship and learning. The humanitiesAZ History of scholarship and learning. The humanities
http://www.loc.gov/catdir/cpso/lcco/lcco.html
Philosophy - Psychology - ReligionPhilosophy - Psychology - ReligionLibrary of Congress Library of Congress
SubclassesSubclassesB B Philosophy (General)Philosophy (General)BC BC LogicLogicBD BD Speculative philosophySpeculative philosophyBF BF PsychologyPsychologyBH BH AestheticsAestheticsBJ BJ EthicsEthicsBL BL Religions. Mythology. RationalismReligions. Mythology. RationalismBM BM JudaismJudaismBP BP Islam. Bahaism. TheosophyIslam. Bahaism. TheosophyBQ BQ BuddhismBuddhismBR BR ChristianityChristianityBS BS The BibleThe BibleBT BT Doctrinal TheologyDoctrinal TheologyBV BV Practical TheologyPractical TheologyBX BX Christian DenominationsChristian Denominations
http://www.loc.gov/catdir/cpso/lcco/lcco.html
Auxiliary Science of HistoryAuxiliary Science of History
Library of Congress Library of Congress
SubclassesSubclasses
C Auxiliary Sciences of History (General)C Auxiliary Sciences of History (General)
CB History of CivilizationCB History of Civilization
CC ArchaeologyCC Archaeology
CD Diplomatics. Archives. SealsCD Diplomatics. Archives. Seals
CE Technical Chronology. CalendarCE Technical Chronology. Calendar
CJ NumismaticsCJ Numismatics
CN Inscriptions. EpigraphyCN Inscriptions. Epigraphy
CR HeraldryCR Heraldry
CS GenealogyCS Genealogy
CT BiographyCT Biographyhttp://www.loc.gov/catdir/cpso/lcco/lcco.html
History General & History of EuropeHistory General & History of EuropeLibrary of CongressLibrary of Congress
SubclassesSubclassesD History (General)D History (General)DA Great BritainDA Great BritainDAW Central Europe DAW Central Europe DB Austria - Liechtenstein - Hungary – CzechoslovakiaDB Austria - Liechtenstein - Hungary – CzechoslovakiaDC France - Andorra – MonacoDC France - Andorra – MonacoDD GermanyDD GermanyDE Greco-Roman WorldDE Greco-Roman WorldDF GreeceDF GreeceDG Italy – MaltaDG Italy – MaltaDH Low Countries - Benelux CountriesDH Low Countries - Benelux CountriesDJ Netherlands (Holland)DJ Netherlands (Holland)DJK Eastern Europe (General)DJK Eastern Europe (General)DK Russia. Soviet Union. Former Soviet Republics - PolandDK Russia. Soviet Union. Former Soviet Republics - PolandDL Northern Europe. ScandinaviaDL Northern Europe. ScandinaviaDP Spain - PortugalDP Spain - PortugalDQ SwitzerlandDQ SwitzerlandDR Balkan PeninsulaDR Balkan PeninsulaDS AsiaDS AsiaDT AfricaDT AfricaDU Oceania (South Seas)DU Oceania (South Seas)DX Gypsies DX Gypsies http://www.loc.gov/catdir/cpso/lcco/lcco.html
History: AmericaHistory: AmericaLibrary of CongressLibrary of Congress
SubclassesSubclasses
E 11-143 AmericaE 11-143 America
151-889 United States151-889 United States
http://www.loc.gov/catdir/cpso/lcco/lcco.html
History: AmericaHistory: AmericaLibrary of CongressLibrary of Congress
SubclassesSubclasses
F 1 - 975 United States local historyF 1 - 975 United States local history
1001 - 1145.2 British America (including 1001 - 1145.2 British America (including Canada) Dutch Canada) Dutch AmericaAmerica
1170 French America1170 French America
1201 - 3799 Latin America. Spanish 1201 - 3799 Latin America. Spanish America America
http://www.loc.gov/catdir/cpso/lcco/lcco.html
GEOGRAPHY. ANTHROPOLOGY. GEOGRAPHY. ANTHROPOLOGY. RECREATIONRECREATION
Library of CongressLibrary of CongressSubclassesSubclasses
G Geography (General). Atlases. MapsG Geography (General). Atlases. MapsGA Mathematical geography. CartographyGA Mathematical geography. CartographyGB Physical geographyGB Physical geographyGC OceanographyGC OceanographyGE Environmental SciencesGE Environmental SciencesGF Human ecology. AnthropogeographyGF Human ecology. AnthropogeographyGN AnthropologyGN AnthropologyGR FolkloreGR FolkloreGT Manners and customs GT Manners and customs GV Recreation. LeisureGV Recreation. Leisure
http://www.loc.gov/catdir/cpso/lcco/lcco.html
SOCIAL SCIENCESSOCIAL SCIENCESLibrary of CongressLibrary of Congress
SubclassesSubclasses
H Social sciences (General)H Social sciences (General)HA StatisticsHA StatisticsHB Economic theory. DemographyHB Economic theory. DemographyHC Economic history and conditionsHC Economic history and conditionsHD Industries. Land use. LaborHD Industries. Land use. LaborHE Transportation and communicationsHE Transportation and communicationsHF CommerceHF CommerceHG FinanceHG FinanceHJ Public financeHJ Public financeHM Sociology (General)HM Sociology (General)HN Social history and conditions. Social problems. Social reformHN Social history and conditions. Social problems. Social reformHQ The family. Marriage. WomenHQ The family. Marriage. WomenHS Societies: secret, benevolent, etc.HS Societies: secret, benevolent, etc.HT Communities. Classes. RacesHT Communities. Classes. RacesHV Social pathology. Social and public welfare. CriminologyHV Social pathology. Social and public welfare. CriminologyHX Socialism. Communism. AnarchismHX Socialism. Communism. Anarchism
http://www.loc.gov/catdir/cpso/lcco/lcco.html
POLITICAL SCIENCEPOLITICAL SCIENCE Library of CongressLibrary of Congress
SubclassesSubclasses
J J General legislative and executive papers General legislative and executive papers JA JA Political science (General) Political science (General) JC JC Political theory Political theory JF JF Political institutions and public administration - General Political institutions and public administration - General JJ JJ Political institutions and public administration - North America Political institutions and public administration - North America JKJK Political institutions and public administration - United States Political institutions and public administration - United States JL JL Political institutions and public administration - Canada, West Political institutions and public administration - Canada, West
Indies, Mexico, Central and South America Indies, Mexico, Central and South America JN JN Political institutions and public administration - Europe Political institutions and public administration - Europe
JQ JQ Political institutions and public administration - Asia, Arab Political institutions and public administration - Asia, Arab countries, Islamic countries, Africa, Atlantic Ocean islands, countries, Islamic countries, Africa, Atlantic Ocean islands,
Australia, New Zealand, Pacific Ocean islands Australia, New Zealand, Pacific Ocean islands JS JS Local government. Municipal government Local government. Municipal government
JV JV Colonies and colonization. Emigration and immigration. Colonies and colonization. Emigration and immigration. International migration International migration
JX JX International law, see KZ (obsolete) International law, see KZ (obsolete) JZ JZ International relations International relations
http://www.loc.gov/catdir/cpso/lcco/lcco.html
LAW
Library of CongressLibrary of CongressSubclassesSubclasses
K Law in general. Comparative and uniform law. Jurisprudence K Law in general. Comparative and uniform law. Jurisprudence KB Religious law in general. Comparative religious law. Jurisprudence KB Religious law in general. Comparative religious law. Jurisprudence KBM Jewish law KBM Jewish law KBP Islamic law KBP Islamic law KBR History of canon law KBR History of canon law KBU Law of the Roman Catholic Church. The Holy See KBU Law of the Roman Catholic Church. The Holy See
United Kingdom and Ireland KD-KDK United Kingdom and Ireland KD-KDK KDZ America. North America KDZ America. North America KE Canada KE Canada KF United States KF United States
KG Latin America - Mexico and Central America -West Indies. Caribbean area KG Latin America - Mexico and Central America -West Indies. Caribbean area KH South America KH South America
KJ-KKZ EuropeKJ-KKZ EuropeKL-KWX Asia and Eurasia, Africa, Pacific Area, and AntarcticaKL-KWX Asia and Eurasia, Africa, Pacific Area, and Antarctica
KZ Law of nations KZ Law of nations
http://www.loc.gov/catdir/cpso/lcco/lcco.html
EDUCATIONEDUCATIONLibrary of CongressLibrary of Congress
Subclasses Subclasses
L Education (General) L Education (General) LA History of education LA History of education LB Theory and practice of education LB Theory and practice of education LC Special aspects of education LC Special aspects of education
LD Individual institutions - United States LD Individual institutions - United States LE Individual institutions - America (except United LE Individual institutions - America (except United States) States) LF Individual institutions - Europe LG Individual LF Individual institutions - Europe LG Individual institutions - institutions - Asia, Africa, Indian Ocean Asia, Africa, Indian Ocean islands, islands, Australia, New Australia, New Zealand, Pacific islands Zealand, Pacific islands
LH College and school magazines and papers LH College and school magazines and papers LJ Student fraternities and societies, United LJ Student fraternities and societies, United States States LT Textbooks LT Textbooks
http://www.loc.gov/catdir/cpso/lcco/lcco.html
MUSICMUSICLibrary of CongressLibrary of Congress
SubclassesSubclasses
M Music M Music
ML Literature on music ML Literature on music
MT Musical instruction and studyMT Musical instruction and study
http://www.loc.gov/catdir/cpso/lcco/lcco.html
FINE ARTSFINE ARTS
Library of CongressLibrary of CongressSubclasses Subclasses
N Visual arts N Visual arts NA ArchitectureNA ArchitectureNB SculptureSNB SculptureSNC Drawing. Design. IllustrationNC Drawing. Design. IllustrationND PaintingND PaintingNE Print mediaNE Print mediaNK Decorative artsNK Decorative artsNX Arts in generalNX Arts in general
http://www.loc.gov/catdir/cpso/lcco/lcco.html
LANGUAGE AND LITERATURELANGUAGE AND LITERATURELibrary of CongressLibrary of Congress
SubclassesSubclasses
P Philology. Linguistics P Philology. Linguistics PA Greek language and literature. Latin language and PA Greek language and literature. Latin language and literature literature PB Modern languages. Celtic languages PB Modern languages. Celtic languages PC Romanic languages PC Romanic languages PD Germanic languages. Scandinavian languages PD Germanic languages. Scandinavian languages PE English language PE English language PF West Germanic languages PF West Germanic languages PG Slavic languages. Baltic languages. Albanian language PG Slavic languages. Baltic languages. Albanian language PH Uralic languages. Basque language PH Uralic languages. Basque language PJ Oriental languages and literatures PJ Oriental languages and literatures PK Indo-Iranian languages and literatures PK Indo-Iranian languages and literatures
http://www.loc.gov/catdir/cpso/lcco/lcco.html
LANGUAGE AND LITERATURELANGUAGE AND LITERATURELibrary of CongressLibrary of Congress
SubclassesSubclasses
PL Languages and literatures of Eastern Asia, PL Languages and literatures of Eastern Asia, Africa, Oceania Africa, Oceania PM Hyperborean, Indian, and artificial languages PM Hyperborean, Indian, and artificial languages PN Literature (General) PN Literature (General)
PQ French literature - Italian literature - Spanish PQ French literature - Italian literature - Spanish literature - Portuguese literature literature - Portuguese literature
PR English literature PR English literature PS American literature PS American literature
PT German literature - Dutch literature - Flemish PT German literature - Dutch literature - Flemish literature literature since 1830 -Afrikaans literature - since 1830 -Afrikaans literature - Scandinavian Scandinavian literature - Old Norse literature: Old literature - Old Norse literature: Old Icelandic and Icelandic and Old Norwegian - Modern Icelandic Old Norwegian - Modern Icelandic literature - literature - Faroese literature - Danish literature - Faroese literature - Danish literature - Norwegian Norwegian literature - Swedish literature literature - Swedish literature
PZ Fiction and juvenile belles letters PZ Fiction and juvenile belles letters
http://www.loc.gov/catdir/cpso/lcco/lcco.html
SCIENCESCIENCELibrary of CongressLibrary of Congress
SubclassesSubclasses
Q Q Science (General)Science (General)QA QA MathematicsMathematicsQB QB AstronomyAstronomyQCQC Physics PhysicsQD QD ChemistryChemistryQE QE GeologyGeologyQH QH Natural history - Biology Natural history - Biology QK QK BotanyBotanyQL QL ZoologyZoologyQM QM Human anatomyHuman anatomyQP QP PhysiologyPhysiologyQR QR MicrobiologyMicrobiology
http://www.loc.gov/catdir/cpso/lcco/lcco.html
MEDICINEMEDICINELibrary of CongressLibrary of Congress
SubclassesSubclasses
R R Medicine (General)Medicine (General)RA RA Public aspects of medicinePublic aspects of medicineRB RB PathologyPathologyRC RC Internal medicineInternal medicineRD RD SurgerySurgeryRE RE OphthalmologyOphthalmologyRF RF OtorhinolaryngologyOtorhinolaryngologyRG RG Gynecology and obstetricsGynecology and obstetricsRJ RJ PediatricsPediatricsRK RK DentistryDentistryRL RL DermatologyDermatologyRM RM Therapeutics. PharmacologyTherapeutics. PharmacologyRS RS Pharmacy and materia medicaPharmacy and materia medicaRT RT NursingNursingRV RV Botanic, Thomsonian, and eclectic medicineBotanic, Thomsonian, and eclectic medicineRX RX HomeopathyHomeopathyRZ RZ Other systems of medicineOther systems of medicine
AGRICULTUREAGRICULTURELibrary of CongressLibrary of Congress
SubclassesSubclasses
S Agriculture (General)S Agriculture (General)
SB Plant cultureSB Plant culture
SD ForestrySD Forestry
SF Animal cultureSF Animal culture
SH Aquaculture. Fisheries. AnglingSH Aquaculture. Fisheries. Angling
SK Hunting sportsSK Hunting sports
TECHNOLOGYTECHNOLOGYLibrary of CongressLibrary of Congress
SubclassesSubclassesT Technology (General)T Technology (General)TA Engineering (General). Civil engineeringTA Engineering (General). Civil engineeringTC Hydraulic engineering. Ocean engineeringTC Hydraulic engineering. Ocean engineeringTD Environmental technology. Sanitary engineeringTD Environmental technology. Sanitary engineeringTE Highway engineering. Roads and pavementsTE Highway engineering. Roads and pavementsTF Railroad engineering and operationTF Railroad engineering and operationTG Bridge engineeringTG Bridge engineeringTH Building constructionTH Building constructionTJ Mechanical engineering and machineryTJ Mechanical engineering and machineryTK Electrical engineering. Electronics. Nuclear engineeringTK Electrical engineering. Electronics. Nuclear engineeringTL Motor vehicles. Aeronautics. AstronauticsTL Motor vehicles. Aeronautics. AstronauticsTN Mining engineering. MetallurgyTN Mining engineering. MetallurgyTP Chemical technologyTP Chemical technologyTR PhotographyTR PhotographyTS ManufacturesTS ManufacturesTT Handicrafts. Arts and craftsTT Handicrafts. Arts and craftsTX Home economicsTX Home economics
http://www.loc.gov/catdir/cpso/lcco/lcco.html
MILITARY SCIENCEMILITARY SCIENCELibrary of CongressLibrary of Congress
SubclassesSubclasses
U Military science (General)U Military science (General)UA Armies: Organization, distribution, UA Armies: Organization, distribution,
military situationmilitary situationUB Military administrationUB Military administrationUC Maintenance and transportationUC Maintenance and transportationUD InfantryUD InfantryUE Cavalry. ArmorUE Cavalry. ArmorUF ArtilleryUF ArtilleryUG Military engineering. Air forcesUG Military engineering. Air forcesUH Other servicesUH Other services
http://www.loc.gov/catdir/cpso/lcco/lcco.html
NAVAL SCIENCENAVAL SCIENCELibrary of CongressLibrary of Congress
SubclassesSubclasses
V Naval science (General)V Naval science (General)
VA Navies: Organization, distribution, naval situationVA Navies: Organization, distribution, naval situation
VB Naval administrationVB Naval administration
VC Naval maintenanceVC Naval maintenance
VD Naval seamenVD Naval seamen
VE MarinesVE Marines
VF Naval ordnanceVF Naval ordnance
VG Minor services of naviesVG Minor services of navies
VK Navigation. Merchant marineVK Navigation. Merchant marine
VM Naval architecture. Shipbuilding. Marine engineeringVM Naval architecture. Shipbuilding. Marine engineering
http://www.loc.gov/catdir/cpso/lcco/lcco.html
BIBLIOGRAPHY. LIBRARY SCIENCE. BIBLIOGRAPHY. LIBRARY SCIENCE. INFORMATION RESOURCES INFORMATION RESOURCES
(GENERAL)(GENERAL)Library of CongressLibrary of Congress
SubclassesSubclasses
Z Books (General). Writing. Paleography. Z Books (General). Writing. Paleography. Book industries and trade. Libraries. Bibliography Book industries and trade. Libraries. Bibliography
ZA Information resources (General) ZA Information resources (General)
http://www.loc.gov/catdir/cpso/lcco/lcco.html