Library of Congress Classification

A      GENERAL WORKS
        (general encyclopedias, 
         reference books, periodicals etc.)

B      PHILOSOPHY--RELIGION
        B-BJ            Philosophy, including 
        BF		Psychology
        BL-BX           Religion

C      AUXILIARY SCIENCES OF HISTORY
        CB              History of civilization 
                        (General)
        CC              Archaeology
        CD              Archives
        CJ              Numismatics
        CR              Heraldry
        CS              Genealogy
        CT              Biography (General)

D      HISTORY:  GENERAL AND OLD WORLD
        (including geography of individual countries)
        D               World history, including World Wars
        DA              Great Britain
        DB              Austria
        DC              France
        DD, etc.        Other individual countries

E-F   HISTORY OF AMERICA
        (including geography of individual countries)
        E 1-143         America (General)
        E 151-857       United States (General)
        F 1-957         United States:  States and local
        F 1001-1140     Canada
        F 1201, etc.    Other individual countries


G      GEOGRAPHY, ANTHROPOLOGY, FOLKLORE, ETC.
        G               Geography (General)
        GB              Physical geography
        GC              Oceanography
        GN              Anthropology
        GR              Folklore
        GV              Recreation

H      SOCIAL SCIENCES
        HA              Statistics
        HB              Economic Theory; Demography
        HC              Economic History and Conditions
        HD              Industries; Land Use; Labor
        HE              Transportation and Communications
        HF              Commerce
        HG              Finance
        HJ              Public Finance
        HM-HX           Sociology


J      POLITICAL SCIENCE
        JA-JC           Political science
        JF-JQ           Constitutional history and public administration
        JS              Local government
        JX              International Law

K      LAW
        K               General
        KD              United Kingdom and Ireland
        KDZ             America: North America, OAS
        KE              Canada
        KF              United States
        KG-KH           Latin America
        KJ-KK           Europe

L      EDUCATION
        L               General
        LA              History of education
        LB              Theory and practice of education
        LC              Special aspects of education
        LD              Individual institutions -- U.S.
        LE              Individual institutions -- Other Americas
        LF              Individual institutions -- Europe
        LG              Individual institutions -- Asia, Africa, Oceania
        LH              College publications
        LJ              Student fraternities and sororities
        LT              Textbooks

M      MUSIC
        M               Scores
        ML              Literature of music
        MT              Musical instruction

N      FINE ARTS
        NA              Architecture
        NB              Sculpture
        NC              Graphic arts
        ND              Painting
        NK              Decorative arts
        
P      LANGUAGE AND LITERATURE
        P               Philology and linguistics
        PA              Classical languages and literatures
        PC              Romance languages
        PD-PF           Germanic languages, including PE, English
        PG              Slavic languages and literatures
        PJ-PL           Oriental languages and literatures
        PN              General and comparative literature
        PQ              Romance literatures
        PR              English literature
        PS              American literature
        PT              Germanic literatures
        PZ              Juvenile literature  

Q      SCIENCE
        QA              Mathematics
        QB              Astronomy
        QC              Physics
        QD              Chemistry
        QE              Geology
        QH              Natural history
        QK              Botany
        QL              Zoology
        QM              Human anatomy
        QP              Physiology
        QR              Bacteriology

R      MEDICINE
        R               General
        RA              Public aspects of medicine
        RB              Pathology
        RC              Internal medicine
        RD              Surgery
        RE              Opthalmology
        RF              Otorhinolaryngology
        RG              Gynecology and obstetrics
        RJ              Pediatrics
        RK              Dentistry
        RL              Dermatology
        RM              Therapeutics, Pharmacology
        RS              Pharmacy, Materia medica
        RT              Nursing
        RV              Botanic, Thomsonian, eclectic medicine
        RX              Homeopathy
        RZ              Other systems of medicine

S      AGRICULTURE
        SB              Plant culture and horticulture
        SD              Forestry
        SF              Animal culture
        SH              Fish culture and fisheries
        SK              Hunting sports

T      TECHNOLOGY
        TA              General engineering, including general 
                        civil engineering
        TC              Hydraulic engineering
        TD              Sanitary and municipal engineering
        TE              Highway engineering
        TF              Railroad engineering
        TG              Bridge engineering
        TH              Building construction
        TJ              Mechanical engineering
        TK              Electrical engineering.  
                        Nuclear engineering
        TL              Motor vehicles.  
                        Aeronautics.  
                        Astronautics
        TN              Mining engineering.  
                        Mineral industries.  
                        Metallurgy
        TP              Chemical technology
        TR              Photography
        TS              Manufactures
        TT              Handicrafts.  
                        Arts and crafts
        TX              Home economics

U      MILITARY SCIENCE
        U               General
        UA              Armies
        UB              Military administration
        UC              Maintenance and transportation
        UD              Infantry
        UE              Cavalry, Armored cavalry
        UF              Artillery
        UG              Military engineering, Air forces, Air warfare
        UH              Other services

V      NAVAL SCIENCE
        V               General
        VA              Navies
        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, Marine engineering

Z      BIBLIOGRAPHY AND LIBRARY SCIENCE
        Z               Books, Book industries, Libraries, Library science, 
                        Bibliography

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