AC Collections Series
AE Encyclopedia
AG Dictionaries, Reference
AI Indexes
AM Museums, Collectors
AN Newspapers
AP Periodicals
AS Academic, Societies
AY Yearbooks, Almanacs
AZ History of Learning.
A-AZ COMPLETE CLASS

B Philosophy
BC Logic
BD Speculative Philosphy
BF Psychology
BH Aesthetics
BJ Ethics. Social Usages.
BL Religions. Mythology.
BM Judaism
BP Islam. Bahaism.
BQ Buddhism
BR Christianity
BS The Bible
BT Doctrinal Theology
BV Practical Theology
BX Christian Denominations
B-BX COMPLETE CLASS

C Aux. Sciences of History
CB History of Civilizations
CC Archeology
CD Diplomatics. Archives.
CE Chronology. Calendar.
CJ Numismatics
CN Inscriptions. Epigraphy
CR Heraldry
CS Geneology
CT Biography
C-CT COMPLETE CLASS

D History
DA Great Britain
DAW Central Europe
DB Austria. Hungary. Czech.
DC France
DD Germany
DE Mediterranean Region.
DF Greece
DG Italy
DH Netherlands
DJ Netherlands(Holland)
DJK Eastern Europe
DK Soviet Union. Poland.
DL N. Europe. Scandinavia
DP Spain. Portugal
DQ Switzerland
DR Balkan Peninsula
DS Asia
DT Africa
DU Oceania (South Seas)
DX Gypsies
D-DX Complete Class

E 11-29 America
E 31-46 North America
E 51-99 N. American Indians
E 151 United States
E 186-188 Colonial History
E 201-298 Revolution
E 300-453 Rev.-Civil War
E 456-655 Civil War
E 661-738 Late 19th Century
E 740 Twentieth Century
E COMPLETE CLASS

F 1-975 U.S. Local History
F 1001-1140 British America. Canada.
F 1201-1392 Mexico
F 1401-1419 Latin America
F 2201-2239 South America
F Complete Class

G Geography, Atlases. Maps.
GA Mathematical geography
GB Physical geography
GC Oceanography
GE Environmental Sciences
GF Human ecology. Anthropogeography
GN Anthropology
GR Folklore
GT Manners. Customs.
GV Recreation. Leisure.
G-GV Complete Class

H Social Sciences
HA Statistics
HB Economic theory. Demography
HC Economic History
HD Production.
HE Transportation. Communications.
HF Commerce
HG Finance
HJ Public Finance
HM Sociology
HN Social History
HQ The family. Marriage.
HS Societies. Clubs.
HT Communities. Classes. Races.
HV Public Welfare. Criminology.
HX Socialism. Communism.
H-HX Complete Class

J Legislative, exec. papers
JA Collections. General Works
JC Political theory
JF Constitutional history,Administration.
JK United States
JL British America.
JN Europe
JQ Asia. Africa. Australia. Oceania.
JS Local government
JV Colonies, colonization.
JX International Law\Relations.
J-JX Complete Class

KD-KDK United Kingdom,
ALL or specific choices:
KD England. Wales.
KDC Scotland
KDE Northern Ireland
KDG Isle of Man. Channels.
KD Ireland (Eire)
KDZ America. N. America. ALL
KEZ Canada. ALL or specific choices:
KE Canada federal
KEA Alberta
KEB British Columbia
KEM Manitoba
New Brunswick
KEN 1200-1799 Newfoundland
KEN 5400-5999 Northwest Territories
KEN 7400-7999 Nova Scotia
KEO Ontario
KEP Prince Edward Island
KEQ Quebec
KES Saskatchewan
KEY Yokan Territory
KFZ United States, ALL
KF Federal, common, state law.
KFA 0-599 Alabama
KFA 1200-1799 Alaska
KFA 2400-2999 Arizona
KFA 3000-3599 Arkansas
KFC 0-1199 California
KFC 1800-2399 Colorado
KFC 3600-4199 Conneticut
KFD 0-599 Delaware
KFD 1200-1799 District of Columbia
KFF Florida
KFG Georgia
KFH Hawaii
KFI 0-599 Idaho
KFI 1200-1799 Illinois
KFI 3000-3599 Indiana
KFI 4200-4799 Iowa
KFK 0-599 Kansas
KFK 1200-1799 Kentucky
KFL Lousiana
KFM 0-599 Maine
KFM 1200-1799 Maryland
KFM 2400-2999 Massachusetts
KFM 4200-4799 Michigan
KFM 5400-5999 Minnesota
KFM 6600-7199 Mississippi
KFM 7800-8399 Missouri
KFN 0-599 Nebraska
KFN 600-1199 Nevada

L Education
LA History of Education
LB Theory, practice of Education
LC Special aspects of education
LD Individual institutions: U.S.
LE Individual institutions: America
LF Individual institutions: Europe
LG Individual institutions: Asia Africa, Oceania
LH College, school:magazines. papers.
LJ Student fraternities, societies:United States.
LT Textbooks
L-LT Complete Class

M Music
ML Literature of music
MT Musical instruction and study
M-MT Complete Class

N Visual Arts
NA Architecture
NB Sculpture
NC Drawing. Design. Illustration.
ND Painting
NE Print media
NK Decorative arts. Applied arts.
NX Arts in general
N-NX Complete Class

P Philology and linguistics
PA Classical languages & literature
PB Modern European languages
PC Romance languages
PD Germanic languages
PE English
PF West Germanic
PG Slavic. Baltic. Albanian
PH Finno-Ugrian. Basque
PJ Oriental languages & lit.
PK Indo-Iranian
PL Eastern Asia. Africa. Oceania
PM Hyperborean. Indian. Artificial
PN Literature. Literary history and collections.
PN 1600 Drama
PQ Romance literatures
PR English literature
PS American literatures
PT Germanic literatures
PZ Juvenile belles lettres
P-PZ Complete Class

Q Science
QA Mathematics
QA 75.5-76.95 Computer Science/Data Proc.
QB Astronomy
QC Physics
QD Chemistry
QE Geology
QH Natural History, Biology
QK Botany
QL Zoology
QM Human anatomy
QP Physiology
QR Microbiology
Q-QR Complete Class

R Medicine
RA Public aspects of medicine
B Pathology
RC Internal medicine. Practice.
RD Surgery
RE Opthamology
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, eclectic medicine
RZ Other systems of medicine
R-RZ Complete Class

S Agriculture
SB Plant culture
SD Forestry
SF Animal culture
SH Aquaculture. Fisheries. Angling.
SK Hunting
S-SK Complete Class

T Technology
TA Engineering, Civil enigneering.
TC Hydraulic engineering
TD Environmental & Sanitary engineering
TE Highway eng. Roads and pavement
TF Railroad engineering/operation
TG Bridge engineering
TH Building construction
TJ Mechanical engineering
TK Electrical eng. Electronics. Nuclear eng.
TL Motor vehicles. Aeronautics.
TN Mining Engineering. Metallurgy.
TP Chemical technology
TR Photography
TS Manufacturers
TT Handicrafts. Arts and crafts.
TX Home economics
T-TX Complete Class

U Military science
UA Armies: Organization, desc. facilities, etc.
UB Military administration
UC Maintenance and transportation
UD Infantry
UE Calvary; Armored, mechanized
UF Artillery
UG Militray engineering. Air warfare.
UH Other services
U-UH Complete Class

V Naval Science
VA Navies:
VB Naval adminsitration
VC Naval maintenance
VD Naval seamen
VE Marines
VF Naval ordinance
VG Minor services of navies
VK Navigation. Merchant marine.
VM Naval architecture
V-VM Complete Class

Z 4-115.5 Books in General
Z 116-659 Book industries & trade
Z 662-1000.5 Libraries. Library Science.
Z 1001-8999 Bibliography
Z Complete Class