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Library of Congress Classification System


The general book stacks (call letters A-M on the Second Floor South and call letters N-Z on the Third Floor South), the Reference Collection, the Humboldt County Collection, and the HSU Archives Collection all use the Library of Congress Classification System for organizing materials by subject. For a more detailed classification breakdown see the Library of Congress Classification Outline from the Library of Congress.

Library of Congress Classification
A - General Works
B - Philosophy, Psychology, Religion
C - Auxiliary Sciences of History
D - History (General) and History of Europe
E-F - History - America and United States
G - Geography, Anthropology, Recreation
H - Social Sciences
J - Political Science
K - Law
L - Education
M - Music and Books on Music
N - Fine Arts
P - Language and Literature
Q - Science
R - Medicine
S - Agriculture
T - Technology
U - Military Science
V - Naval Science
Z - Bibliography, Library Science, Information Resources (General)
A - General Works
AC - Collections, Series, Collected works
AE - Encyclopedias (general)
AG - Dictionaries and other general reference works
AI - Indexes (general)
AM - Museums, Collectors and collecting
AN - Newspapers
AP - Periodicals (general)
AS - Academies and learned societies
AY - Yearbooks, Almanacs, Directories
AZ - History of scholarship and learning

B - Philosphy, Psychology, Religion
B - Philosophy (General)
BC - Logic
BD - Speculative philosophy
BF - Psychology
BH - Aesthetics
BJ - Ethics
BL - Religions, Mythology, Rationalism
BM - Judaism
BP - Islam, Bahaism, Theosophy, etc.
BQ - Buddhism
BR - Christianity
BS - The Bible
BT - Doctrinal Theology
BV - Practical Theology
BX - Christian Denominations

C - Auxiliary Sciences of History
CB - History of Civilization
CC - Archaeology
CD - Diplomatics, Archives, Seals
CE - Technical Chronology, Calendar
CJ - Numismatics
CN - Inscriptions, Epigraphy
CR - Heraldry
CS - Genealogy
CT - Biography (general)

D - History (General) and History of Europe
D - History (General)
DA - Great Britain
DAW - Central Europe
DB - Austria, Liechtenstein, Hungary, Czechoslovakia
DC - France, Andorra, Monaco
DD - Germany
DE - Greco-Roman World
DF - Greece
DG - Italy, Malta
DH - Low Countries - Benelux Countries
DJ - Netherlands (Holland)
DJK - Eastern Europe (General)
DK - Russia, Soviet Union, Former Soviet Republics - Poland
DL - Northern Europe, Scandinavia
DP - Spain, Portugal
DQ - Switzerland
DR - Balkan Peninsula
DS - Asia
DT - Africa
DU - Oceania (South Seas)
DX - Gypsies

E - History - America (General) & United States (General)
E 11-29 - America (General)
E 31-49 - North America (General)
E 51-99 - Indians of North America
E 101-135 - Discovery of America
E 151-184 - United States: General History
E 185 - Afro-Americans in the United States
E 186-199 - Colonial History, 1607-1775
E 201-298 - The Revolution, 1775-1783
E 300-453 - Revolution to the Civil War, 1775/1783-1861
E 456-655 - Civil War Period, 1861-1865
E 660-664 - Late Nineteenth Century, 1865-1900
E 740-837 - Twentieth Century
   World War I: see D 501-680
   World War II: see D 731-838
E 838-889 - Late Twentieth Century, 1961-

F - History - United States (Local) & America (except the U.S.)
F 1-975 - United States (Individual States)
F 1001-1145 - British America (Canada)
F 1170 - French America
F 1201-3799 - Latin America, Spanish America

G - Geography; Anthropology; Folklore; Recreation
G - Geography (General), Atlases, Maps
GA - Mathematical Geography, Cartography
GB - Physical Geography
GC - Oceanography
GE - Environmental Sciences
GF - Human Ecology, Anthropogeography
GN - Anthropology
GR - Folklore
GT - Manners and Customs (General)
GV - Recreation, Leisure

H - Social Sciences
H - Social Sciences (General)
HA - Statistics
HB - Economic Theory, Demography
HC - Economic History and Conditions
HD - Industries, Land Use, Labor
HE - Transportation and Communication
HF - Commerce
HG - Finance
HJ - Public Finance
HM - Sociology (General)
HN - Social History and Conditions, Social Problems, Social Reform
HQ - The Family, Marriage, Women
HS - Societies: Secret, Benevolent, etc.
HT - Communities, Classes, Races
HV - Social Pathology, Social and Public Welfare, Criminology
HX - Socialism, Communism, Anarchism

J - Political Science
J - General Legislative and Executive Papers
JA - Political Science (General)
JC - Political Theory
JF - Political Institutions and Public Administration - General
JK - Political Institutions and Public Administration - United States
JL - Political Institutions and Public Administration - Canada, West Indies, Mexico, Central and South America
JN - Political Institutions and Public Administration - Europe
JQ - Political Institutions and Public Administration - Asia, Arab Countries, Islamic Countries, Africa, Atlantic Ocean Islands, Australia, New Zealand, Pacific Ocean Islands
JS - Local Government, Municipal Government
JV - Colonies and Colonization, Emigration and Immigration, International Migration
JZ - International Relations

K - Law
K - Law in General, Comparative and Uniform Law, Jurispudence
KB - Religious Law
KD - United Kingdom, Ireland
KE - Canada
KF - United States
KG - Latin America (Mexico and Central America), West Indies, Caribbean Areas
KH - South America
KJ-KK - Europe
KL-KW - Asia and Eurasia, Africa, Pacific Area, and Antarctica
KZ - Law of Nations

L - Education
L - Education (General)
LA - History of Education
LB - Theory and Practice of Education
LC - Special Aspects of Education
LD - Individual Institutions - United States
LE - Individual Institutions - America (except United States)
LF - Individual Institutions - Europe
LG - Individual Institutions - Asia, Africa, Indian Ocean Islands, Australia, New Zealand, Pacific Islands
LH - College and School Magazines and Papers
LJ - Student Fraternities and Societies, United States
LT - Textbooks

M - Music
M - Music
ML - Literature on Music
MT - Musical 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
NX - Arts in General

P - Language and Literature
P - Philology and Linguistics
PA - Greek Language and Literature, Latin Language and Literature
PB - Modern Languages, Celtic Languages
PC - Romanic Languages
PD - Germanic Languages, Scandinavian Languages
PE - English Language
PF - West Germanic Languages
PG - Slavic Languages, Baltic Languages, Albanian Language
PH - Uralic Languages, Basque Language
PJ - Oriental Languages and Literatures
PK - Indo-Iranian Languages and Literatures
PL - Languages and Literatures of Eastern Asia, Africa, Oceania
PM - Hyperborean, Indian, and Artificial Languages
PN - Literature (General)
PQ - French Literature, Italian Literature, Spanish Literature, Portuguese Literature
PR - English Literature
PS - American Literature
PT - German Literature, Dutch and Scandinavian Literature
PZ - Fiction and Juvenile Belles Lettres

Q - Science
Q - Science (General)
QA - Mathematics
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 - Medicine (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 and Materia Medica
RT - Nursing
RV - Botanic, Thomsonian, and Eclectic Medicine
RX - Homeopathy
RZ - Other Systems of Medicine

S - Agriculture
S - Agriculture (General)
S 900-999 - Conservation of Natural Resources
SB - Plant Culture
SD - Forestry
SF - Animal Culture
SH - Aquaculture, Fisheries, Angling
SK - Hunting Sports

T - Technology
T - Technology (General)
TA - Engineering (General), Civil Engineering
TC - Hydraulic Engineering, Ocean Engineering
TD - Environmental Technology, Sanitary Engineering
TE - Highway Engineering, Roads and Pavements
TF - Railroad Engineering and Operation
TG - Bridge Engineering
TH - Building Construction
TJ - Mechanical Engineering and Machinery
TK - Electrical Engineering, Electronics, Nuclear Engineering
TL - Motor Vehicles, Aeronautics, Astronautics
TN - Mining Engineering, Metallurgy
TP - Chemical Technology
TR - Photography
TS - Manufactures
TT - Handicrafts, Arts and Crafts
TX - Home Economics

U - Military Science
U - Military Science (General)
UA - Armies: Organization, Distribution, Military Situation
UB - Military Administration
UC - Maintenance and Transportation
UD - Infantry
UE - Cavalry, Armor
UF - Artillery
UG - Military Engineering, Air Forces
UH - Other Services

V - Naval Science
V - Naval Science (General)
VA - Navies: Organization, Distribution, Naval Situation
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, Shipbuilding, Marine Engineering

Z - Bibliography and Library Science
Z - Books (General), Writing, Paleography, Book Industries and Trade, Libraries, Bibliography
Z 4-8 - History of Books & Bookmaking
Z 40-115 - Writing
Z 116-549 - Book Industries and Trade
Z 551-656 - Copyright
Z 657-659 - Freedom of the Press, Censorship
Z 662-997 - Libraries and Library Science
Z 998-1000 - Booksellers' Catalogs, Book Prices
Z 1001-1107 - General Bibliography
Z 1201-4980 - National Bibliography
Z 5051-7999 - Subject Bibliography
Z 8001-8999 - Personal Bibliography
ZA - Information Resources (General)