A       General Works
        AE-AG   Encyclopedias
        AI      Indexes
        AY      Almanacs

B       Philosophy*Psychology*Religion
        B-BJ    Philosophy, including
        BF      Psychology
        BJ      Ethics
        BL-BX   Religion

C       Auxiliary Sciences of History
        CB      History of Civilization & Culture
        CC      Archaeology
        CD      Archives
        CJ      Numismatics
        CR      Heraldry
        CS      Genealogy
        CT      Biography

D       History:  General & Old World
        (including geography of individual countries)
        D       World History, including World Wars
        DA      Great Britain
        DB      Austria
        DC      France
        DD      Germany
        DE      Greco-Roman World
        DF      Greece
        DG      Italy, Rome
        DJK     Eastern Europe
        DK      Russia, former Soviet Republics
        DP      Spain and Portugal
        DQ      Switzerland
        DR      Turkey and Balkan States
        DS      Asia, Middle East
        DT      Africa
        DU      Oceania

E       History--America
        E1-143  America (General)
        E 51-99 Indians of North America
        E 151-857       United States (General)
        E 184.M5        Mexican American
        E 185   Afro-Americans
        E 201-298       Revolutionary War
        E 456-655       Civil War
        E 740-  Twentieth Century
        
F       History--Americas
        F 1-957 United States: States and Local
        F 1203-1409     Mexico
        FC              Canada
        
G       Geography*Anthropology*Folklore*Recreation
        G       Geography (General)
        GB      Physical Geography
        GC      Oceanography
        GF      Human Ecology
        GN      Anthropology
        GR      Folklore
        GT      Manners and Customs, Holidays
        GV      Recreation (Sports, Dance)

H       Social Sciences
        HA      Statistics
        HB-HC   Economics
        HD-HF Business
        HM      Sociology
        HQ      Family, Marriage, Sexual Life, Feminism
        HV      Social/Public Welfare, Alcoholism, Drug Abuse,
 Criminology

J       Political Science
        JA-JC   Political Science
        JF-JQ   Constitutional History and Public Administration
        JS      Local Government
        JX      International Law

K       Law, Civil Rights
        KE      Law of Canada
        KEO     Law of Ontario

L       Education

M       Music
        M       Scores
        ML      Literature of Music
        MT      Musical instruction & study

N       Fine Arts
        NA      Architecture
        NB      Sculpture
        NC      Graphic Arts
        ND      Painting
        NE      Print Media
        NK      Decorative Arts

P       Language and Literature
        P       Philosophy and Linguistics
        PA      Classical Languages and Literatures
        PC      Romance Languages
        PD-PF   Germanic Languages, including
        PE      English Language
        PG      Slavic Languages and Literatures
        PJ-PL   Oriental Languages and Literatures
        PN      General and Comparative Literature
        PQ      Romance Literatures, Spanish Literature
        PR      English Literature
        PS      American Literature
          PS 8000+ Canadian, English & French, Literature
        PT      Germanic Literature
        PZ      Fiction in English*Juvenile Literature

Q       Science
        QA      Mathematics
        QB      Astronomy
        QC      Physics
        QD      Chemistry
        QE      Geology
        QH      Natural History, Ecology
        QK      Botany
        QL      Zoology
        QM      Human Anatomy
        QP      Physiology
        QR      Bacteriology

S       Agriculture*Conservation
        SB      Plant Culture & Horticulture
        SD      Forestry
        SF      Animal Culture
        SH      Fish Culture & 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 & Crafts, Fashion, Sewing
        TX      Home Economics, Cookery

U       Military Science
        UG      Space Warfare

V       Naval Science

W       Medicine
        WA      Public Health
        WC      Infectious Diseases
        WM      Psychiatry
        WT      Geriatrics
        WU      Dentistry
        WY      Nursing
        WZ      History of medicine


Z       Bibliography*Word Processing*Library Science

Revised: December 5, 2001