Skip to Main Content
It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.

Homepage: Library of Congress Classification

Library of Congress Classification

Books are shelved in the Northwest Iowa Community College Library using the Library of Congress Classification System.

The following is a brief outline of classes and major subclasses. 

Library of Congress Tutorials

Call Number Subject Area
A General Works
AZ History of Scholarship
B Philosophy, Psychology, Religion
B Philosophy (General)
BC Logic
BD Speculative Philosophy
BF Psychology, Parapsychology
BH Aesthetics
BJ Ethics, Social Usages, Etiquette
BL Religions, Mythology
BM Judaism
BP Islam, Bahaism, Theosophy
BQ Buddhism
BR Christianity
BS Bible
BT Christianity: Doctrinal Theology
BV Christianity: Practical Theology
BX Christian Denominations
C Auxiliary Sciences of History
C General
CB History of Civilization
CC Archaeology
D History: General and Old World
D General
DA Great Britain
DB Austria, Hungary
DC France
DD Germany
DE Mediterranean Region
DF Greece
DG Italy
DH Low Countries: Belgium, Luxemburg
DJ Netherlands
DJK Eastern Europe
DK Former Soviet Republics, Russia (Federation), Poland
DL Northern Europe, Scandinavia
DP Spain, Portugal
DQ Switzerland
DR Balkan Peninsula, Turkey
DS Asia
DT Africa
DU Oceania, Australia, New Zealand, Hawaii
DX Gypsies
E United States of America: General Works and History
F United States Local History, Canada, Latin America
G Geography, Anthropology, Recreation
G General Atlases, Maps
GA Mathematical Geography, Cartography
GB Physical Geography
GC Oceanography
GE Environment
GF Human Ecology, Cultural Geography
GN Anthropology
GR Folklore
GT Manners and Customs
GV Recreation, Sports, Games
H Social Sciences
H General
HA Statistics
HB Economics
HC Economic History
HD Land, Agriculture, Industry, Labor
HE Transportation, Communications
HF Commerce
HG Finance
HJ Public Finance
HM Sociology
HN Social History
HQ Family, Marriage, Women, Children, Youth, Aged
HS Societies, Clubs
HT Communities, Classes, Races
HV Social Pathology, Social Service, Criminology
HX Socialism, Communism
J Political Science
J General
JC Political Theory, The State
JF Constitutional History: General
JK Constitutional History: United States
JL Constitutional History: Canada, Latin America
JN Constitutional History: Europe
JQ Constitutional History: Asia, Africa, Oceania
JS Local Government
JZ International Relations
K Law
K General
KD United Kingdom, Ireland
KE Canada
KF United States
KZ International Law
L Education
L General
LA History of Education
LB Theory and Practice of Education
LC Special Aspects of Education
M Music
M General
ML Literature of Music
MT Music Instruction
N Fine Arts
N Visual Arts (General)
NA Architecture
NB Sculpture
NC Drawing
ND Painting
NE Print Media
NK Decorative Arts, Applied Arts
NX Arts in General, Visual and Performing Arts
P Language and Literature
P Philosophy and Linguistics
PA Classical Languages and Literature
PC Romance Languages
PE English Language
PF Dutch, German
PG Slavic Languages
PL East Asian Languages
PN Literature, General Literary History and Collections, Performing Arts
PQ Romance Literature
PR English Literature
PS American Literature
PT Germanic 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, Diseases
RC Internal Medicine
RD Surgery
RE Ophthalmology, Eye
RF Otolaryngology, Ear, Nose, Throat
RG Gynecology, Obstetrics, Women, Childbirth
RJ Pediatrics, Children
RK Dentistry, Teeth
RL Dermatology, Skin
RM Therapeutics, Pharmacology
RS Pharmacy
RT Nursing
RZ Other Systems of Medicine
S Agriculture
S General
SB Plant Culture
SD Forestry
SF Animal Culture
SH Aquaculture, Fishing, Angling
SK Hunting
T Technology
T General
TA Engineering: General and Civil
TC Hydraulic Engineering
TD Environmental Technology, Sanitary Engineering
TE Highway Construction
TF Railroad Construction
TG Bridge Construction
TH Building Construction
TJ Mechanical Engineering, Mechanical Machinery
TK Electrical Engineering, Electronics
TL Motor Vehicles, Automobiles, Aeronautics, Astronautics
TN Mining Engineering, Metallurgy
TP Chemical Technology
TR Photography
TS Manufacture
TT Handicrafts, Arts and Crafts
TX Home Economics
U Military Science
V Naval Science
Z Bibliography: Library Science

 

About the Library of Congress