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Answered By: Michael Pujals
Last Updated: Sep 28, 2018     Views: 14359

Subject Categories for Library Books
Library of Congress Classification System




A          General Works

                AE            Encyclopedias

                AG           Dictionaries

                AI             Indexes

                AY           Yearbooks, Almanacs, Directories


B          Philosophy, Psychology, Religion

                B              Philosophy (general)

                BC           Logic

                BD           Speculative Philosophy

                BF            Psychology, Parapsychology, Occultism

                BH           Aesthetics

                BJ            Ethics. Etiquette

                BL            Religions. Mythology

                BM          Judaism

                BP           Islam

                BQ           Buddhism

                BR           Christianity

                BS           The Bible

                BT            Doctrinal theology

                BV            Practical theology

                BX           Christian denominations


C          Auxiliary Sciences of History


                C              General

                CB           History of Civilization

                CC           Archaeology

                CR           Heraldry

                CS           Genealogy

                CT            Biography


D          History: General and Old World

                D             General

                DA-DR     Europe

                DA           Great Britain

                DB           Austria, Hungary, Czechoslovakia

                DC           France

                DD           Germany

                DE           Classical: Greco-Roman

                DF           Greece

                DG           Italy

                DK           Soviet Union. Poland

                DL           Northern Europe. Scandinavia

                DP           Spain. Portugal

                DR           Balkan Peninsula. Turkey

DS           Asia

DT            Africa

DU           Oceania, Australia, New Zealand


E-F       History: Western Hemisphere

                E              America. U.S.

                F              U.S. local history. Canada. Latin America


G          Geography, Anthropology, Recreation

                G             General. Atlases. Maps

                GB           Physical Geography

                GC           Oceanography

                GE           Environmental Sciences

                GF           Human ecology. Anthropogeography

                GN           Anthropology

                GR           Folklore

                GT            Manners and customs

                GV           Recreation. Sports. Games


H          Social Sciences

                H             General

                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. Taxes

                HM          Sociology (general)

                HN           Social history, problems, reform

                HQ           Family. Marriage. Women

                HS           Societies. Clubs

                HT            Communities. Classes. Races

                HV           Social Pathology. Social service. Criminology

                HX           Socialism. Communism. Anarchism


J           Political Science

                J               General legislative and executive papers

                JA            Political science – General

                JC            Political theory. The state

                JF             Political Institutions – General

                JK            Political Institutions – United States

JL-JQ        Political Institutions – Non-U.S.

                JS            Local government

                JV             Colonies and colonization. Immigration

                JX            International law

                JZ             International relations


K          Law

                K              General

                KF            United States


L          Education      

                L              General

                LA            History of Education

                LB            Theory and practice of education

                LC            Special aspects of education

                LD           Individual institutions – U.S.


M         Music

                M             General

                ML           Literature of Music

                MT           Music Instruction and study


N          Fine Arts

                N             Visual arts (General)

                NA           Architecture

                NB           Sculpture

                NC           Drawing. Design. Illustration

                ND           Painting

                NE           Print media

                NK           Decorative arts. Applied arts

                NX           Arts in general


                                 (Adapted from Portland State University Millar Library)


P          Language and Literature

                P              Philology and linguistics       

                    PA           Classical languages and literature

                    PB           Celtic Languages

                    PC           Romance Languages

                    PD           Germanic & Scandinavian Languages

                    PE            English Language

                    PF            West Germanic Languages. Dutch. German



PG           Slavic (Russian). Baltic. Albanian

                    PH           Uralic languages & literature

                    PJ            Oriental languages & literature

                    PK           Indo-Iranian languages & literature

                    PL            East Asian languages & literature

                    PM          American Indian & Artificial languages.

                    PN           Literature, general & history. Performing arts.

                    PQ           Romance literatures.

                    PR           English literature

                    PS           American literature

                    PT            Germanic literatures

                    PZ            Fiction and Juvenile Literature


Q             Science

                    Q             General

                    QA           Mathematics. Computer Science

                    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             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

                    RX           Homeopathy          

                    RZ           Other systems of medicine


S             Agriculture

                    S              General

                    SB           Plant Culture

                    SD           Forestry

                    SF            Animal Culture

                    SH           Aquaculture. Fisheries. Angling

                    SK           Hunting


T             Technology

                    T              General

                    TA            Engineering – General and civil

                    TC            Hydraulic engineering                           

                    TD            Environmental tech. Sanitary engineering

                    TE            Highway engineering

                    TH            Building construction

                    TJ             Mechanical engineering and machinery

TK            Electrical engineering. Electronics. Nuclear engineering

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

                UF            Artillery

                UG           Military engineering. Air forces. Air warfare


V          Naval Science

                V              General

                VA            Navies

                VK            Navigation. Merchant marine

                VM           Naval architecture. Marine engineering


Z          Bibliography: Library Science.

Z              Books. Writing. Paleography. Book industries. Libraries.

ZA            Information resources (general)




LC Classification by Your Major


Subject                            LC Classification


Accounting                             HF

Agriculture/Forestry              S, SD

Art/Art History/Design          N, NB-NZ

Architecture                           NA

Biology                                    QH

Business Administration         HB – HJ

Chemistry                                QD

Child & Family Services         HQ

Communications                    HF

Criminal Justice                      HV

Dance                                     GV

Early Childhood                       HQ, LB, LC

Earth Science                         G – GF, QE

Economics                              HB – HC

Education                                L, LB, LC

English                                    PE, PN, PR, PS, PZ

Environmental Science          GE, QH, QL

Finance                                   HG

Health Education                    R, L

History                                    D, E, F

International relations            JZ

Management                          HD, HF

Marketing                               HF

Mathematics                          QA

Medicine                                 R-RZ

Music                                      ML-MT

Nursing                                   R, RT

Occupational Therapy            RM

Philosophy                              B-BD

Physical Education GV

Physics                                    QL

Political Science                    J

Psychology                              BF

Public Health                          RA

Religion                                  BL-BX     

Social Work                            HV          

Sociology                                HM


                                 (Adapted from Portland State University Millar Library)