B History & systems of philosophy
BF Psychology
BL Religions, mythology, rationalism
BM-R Individual Religions
CB History of civilization & culture
CT Biography (General)
DA Great Britain
DB Austria, Czechoslovakia, Hungary
DC France
DD Germany
DE Mediterranean, Greco-Roman world
DF Greece
DG Italy
DK Russia
DP Spain, Portugal
DR Eastern Europe, Turkey
DS Asia
DT Africa
E America (General), U.S.
F1-975 U.S. local history
F1001-1140 Canada
F1201-1392 Mexico
F1401-3799 Central & South America, Caribbean
G Atlases, globes, maps
GN Anthropology
GV Dance, leisure, sports
HA Statistics
HC Economic history & conditions
HJ Public finance
HM Sociology
HQ Family, marriage, home
HQ1101-2030 Women
JF Constitutional history and administration
JK U.S. constitutional history
JS Local government
JX International law, international relations
LA History of education
LB Theory & practice
LC Special aspects of education
LD Individual U.S. institutions
LH College & school publication
M Musical works
ML Literature of music
MT Music instruction & study
NA Architecture
NB Sculpture
NC Drawing, design, illustration
ND Painting
NE Print media
NK Decorative arts
NX Arts in general
P Linguistics
PA Greek & Latin
PC Romance languages
PD Old Germanic & Scandinavian languages
PE English language
PF Dutch, Flemish, German languages
PG Slavic languages & literature
PL East Asian, African, & Oceanic languages & literatures
PN Literature,literary history & collections
PN1993-1996 Motion pictures
PQ Romance literatures
PR English literature
PS American literature
PT Germanic literatures
QA Mathematics
QA75.5-76 Computer science
QA273-280 Statistics
QB Astronomy
QC Physics
QD Chemistry
QE Geology
QH Natural history - Biology
QK Botany
QL Zoology
QM Human anatomy
QP Physiology
QR Microbiology
TA Engineering (General), civil engineering
TC Hydraulic engineering
TD Environmental technology
TE Civil engineering (various subjects)
TJ Mechanical engineering & machinery
TK Electrical engineering, electronics
TP Chemical technology
TR Photography