| 1 |
subjects |
Library of Congress Subject Areas |
ROOT |
| 2 |
A |
General Works |
subjects |
| 3 |
AC |
Collections. Series. Collected works |
A |
| 4 |
AI |
Indexes (General) |
A |
| 5 |
AM |
Museums (General). Collectors and collecting (General) |
A |
| 6 |
AS |
Academies and learned societies (General) |
A |
| 7 |
AZ |
History of Scholarship The Humanities |
A |
| 8 |
B |
Philosophy. Psychology. Religion |
subjects |
| 9 |
B1 |
Philosophy (General) |
B |
| 10 |
BC |
Logic |
B |
| 11 |
BD |
Speculative Philosophy |
B |
| 12 |
BF |
Psychology |
B |
| 13 |
BH |
Aesthetics |
B |
| 14 |
BJ |
Ethics |
B |
| 15 |
BL |
Religion |
B |
| 16 |
BM |
Judaism |
B |
| 17 |
BP |
Islam. Bahaism. Theosophy, etc |
B |
| 18 |
BQ |
Buddhism |
B |
| 19 |
BR |
Christianity |
B |
| 20 |
BS |
The Bible |
B |
| 21 |
BT |
Doctrinal Theology |
B |
| 22 |
BV |
Practical Theology |
B |
| 23 |
BV1460 |
Religious Education |
BV |
| 24 |
BX |
Christian Denominations |
B |
| 25 |
C |
Auxiliary Sciences of History |
subjects |
| 26 |
C1 |
Auxiliary sciences of history (General) |
C |
| 27 |
CB |
History of civilization |
C |
| 28 |
CC |
Archaeology |
C |
| 29 |
CD |
Diplomatics. Archives. Seals |
C |
| 30 |
CD921 |
Archives |
CD |
| 31 |
CE |
Technical chronology. Calendar |
C |
| 32 |
CJ |
Numismatics |
C |
| 33 |
CN |
Inscriptions. Epigraphy. |
C |
| 34 |
CR |
Heraldry |
C |
| 35 |
CS |
Genealogy |
C |
| 36 |
CT |
Biography |
C |
| 37 |
D |
History General and Old World |
subjects |
| 38 |
D1 |
History (General) |
D |
| 39 |
D051 |
Ancient History |
D1 |
| 40 |
D111 |
Medieval History |
D1 |
| 41 |
D204 |
Modern History |
D1 |
| 42 |
D501 |
World War I |
D1 |
| 43 |
D731 |
World War II |
D1 |
| 44 |
D839 |
Post-war History, 1945 on |
D1 |
| 45 |
D880 |
Developing Countries |
D1 |
| 46 |
D890 |
Eastern Hemisphere |
D1 |
| 47 |
D901 |
Europe (General) |
D1 |
| 48 |
DA |
Great Britain |
D |
| 49 |
DAW |
Central Europe |
DA |
| 50 |
DB |
Austria |
D |
| 51 |
DC |
France |
D |
| 52 |
DD |
Germany |
D |
| 53 |
DE |
The Mediterranean Region. The Greco-Roman World |
D |
| 54 |
DF |
Greece |
D |
| 55 |
DG |
Italy |
D |
| 56 |
DH |
Netherlands (The Low Countries) |
D |
| 57 |
DJ |
Netherlands (Holland) |
D |
| 58 |
DJK |
Eastern Europe |
DJ |
| 59 |
DK |
Russia. Soviet Union. Former Soviet Republics |
D |
| 60 |
DL |
Northern Europe. Scandinavia |
D |
| 61 |
DP |
Spain |
D |
| 62 |
DR |
Balkan Peninsula |
D |
| 63 |
DS |
Asia |
D |
| 64 |
DT |
Africa |
D |
| 65 |
DU |
Oceania (South Seas) |
D |
| 66 |
E |
History America |
subjects |
| 67 |
E11 |
America (General) |
E |
| 68 |
E151 |
United States (General) |
E |
| 69 |
F |
History United States, Canada, Latin America |
subjects |
| 70 |
F001 |
United States local history |
F |
| 71 |
F1001 |
Canada (General) |
F |
| 72 |
F1201 |
Latin America (General) |
F |
| 73 |
G |
Geography. Anthropology. Recreation |
subjects |
| 74 |
G1 |
Geography (General) |
G |
| 75 |
GA |
Mathematical geography. Cartography |
G |
| 76 |
GB |
Physical geography |
G |
| 77 |
GC |
Oceanography |
G |
| 78 |
GE |
Environmental Sciences |
G |
| 79 |
GF |
Human ecology. Anthropogeography |
G |
| 80 |
GN |
Anthropology |
G |
| 81 |
GR |
Folklore |
G |
| 82 |
GT |
Manners and customs |
G |
| 83 |
GV |
Recreation Leisure |
G |
| 84 |
H |
Social Sciences |
subjects |
| 85 |
H1 |
social Sciences (General) |
H |
| 86 |
HA |
Statistics |
H |
| 87 |
HB |
Economic Theory |
H |
| 88 |
HC |
Economic History and Conditions |
H |
| 89 |
HD |
Industries. Land use. Labor |
H |
| 90 |
HD28 |
Management. Industrial Management |
HD |
| 91 |
HD61 |
Risk Management |
HD |
| 92 |
HE |
Transportation and Communications |
H |
| 93 |
HF |
Commerce |
H |
| 94 |
HF5601 |
Accounting |
HF |
| 95 |
HG |
Finance |
H |
| 96 |
HJ |
Public Finance |
H |
| 97 |
HM |
Sociology |
H |
| 98 |
HN |
Social history and conditions. Social problems. Social reform |
H |
| 99 |
HQ |
The family. Marriage. Woman |
H |
| 100 |
HS |
Societies secret benevolent etc |
H |
| 101 |
HT |
Communities. Classes. Races |
H |
| 102 |
HV |
Social pathology. Social and public welfare |
H |
| 103 |
HX |
Socialism. Communism. Anarchism |
H |
| 104 |
J |
Political Science |
subjects |
| 105 |
J1 |
General legislative and executive papers |
J |
| 106 |
JA |
Political science (General) |
J |
| 107 |
JC |
Political theory |
J |
| 108 |
JF |
Political institutions (General) |
J |
| 109 |
JK |
Political institutions (United States) |
J |
| 110 |
JL |
Political institutions (America except United States) |
J |
| 111 |
JN |
Political institutions (Europe) |
J |
| 112 |
JN101 |
Great Britain |
JN |
| 113 |
JN1187 |
Scotland |
JN |
| 114 |
JQ |
Political institutions Asia |
J |
| 115 |
JS |
Local government Municipal government |
J |
| 116 |
JV |
Colonies and colonization. Emigration and immigration. International migration |
J |
| 117 |
JX |
International law |
J |
| 118 |
JZ |
International relations |
J |
| 119 |
K |
Law |
subjects |
| 120 |
K1 |
Law (General) |
K |
| 121 |
KD |
England and Wales |
K |
| 122 |
KDC |
Scotland |
KD |
| 123 |
KF |
United States Federal Law |
K |
| 124 |
KZ |
Law of Nations |
K |
| 125 |
L |
Education |
subjects |
| 126 |
L1 |
Education (General) |
L |
| 127 |
LA |
History of education |
L |
| 128 |
LB |
Theory and practice of education |
L |
| 129 |
LB1501 |
Primary Education |
LB |
| 130 |
LB1603 |
Secondary Education. High schools |
LB |
| 131 |
LB2300 |
Higher Education |
LB |
| 132 |
LB2361 |
Curriculum |
LB |
| 133 |
LC |
Special aspects of education |
L |
| 134 |
LC5201 |
Education extension. Adult education. Continuing education |
LC |
| 135 |
LD |
Individual institutions (United States) |
L |
| 136 |
LE |
Individual institutions (America except United States) |
L |
| 137 |
LF |
Individual institutions (Europe) |
L |
| 138 |
LG |
Individual institutions (Asia. Africa) |
L |
| 139 |
LT |
Textbooks |
L |
| 140 |
M |
M Music and Books on Music |
subjects |
| 141 |
M1 |
Music |
M |
| 142 |
ML |
Literature of music |
M |
| 143 |
MT |
Musical instruction and study |
M |
| 144 |
N |
Fine Arts |
subjects |
| 145 |
N1 |
Visual arts (General) For photography, see TR |
N |
| 146 |
NA |
Architecture |
N |
| 147 |
NB |
Sculpture |
N |
| 148 |
NC |
Drawing Design Illustration |
N |
| 149 |
ND |
Painting |
N |
| 150 |
NE |
Print media |
N |
| 151 |
NK |
Decorative arts Applied arts Decoration and ornament |
N |
| 152 |
NX |
Arts in general |
N |
| 153 |
P |
Language and Literature |
subjects |
| 154 |
P1 |
Philology. Linguistics |
P |
| 155 |
PA |
Classical philology |
P |
| 156 |
PB |
Modern European Languages |
P |
| 157 |
PB1501 |
Gaelic (Scottish Gaelic, Erse) |
PB |
| 158 |
PC |
Romance languages |
P |
| 159 |
PD |
Germanic languages |
P |
| 160 |
PE |
English |
P |
| 161 |
PF |
West Germanic |
P |
| 162 |
PG |
Slavic, Baltic, Albanian languages and literature |
P |
| 163 |
PH |
Finno-Ugrian, Basque languages and literatures |
P |
| 164 |
PI |
Oriental languages and literatures |
P |
| 165 |
PJ |
Semitic |
P |
| 166 |
PK |
Indo-Iranian |
P |
| 167 |
PL |
Languages and literatures of Eastern Asia, Africa, Oceania |
P |
| 168 |
PM |
Hyperborean, Indian, and Artificial languages |
P |
| 169 |
PN |
Literature (General) |
P |
| 170 |
PN0080 |
Criticism |
PN |
| 171 |
PN0441 |
Literary History |
PN |
| 172 |
PN1990 |
Broadcasting |
PN |
| 173 |
PN1993 |
Motion Pictures |
PN |
| 174 |
PN2000 |
Dramatic representation. The Theater |
PN |
| 175 |
PQ |
Romance literatures |
P |
| 176 |
PR |
English literature |
P |
| 177 |
PS |
American literature |
P |
| 178 |
PT |
Germanic literature |
P |
| 179 |
PZ |
Childrens literature |
P |
| 180 |
Q |
Science |
subjects |
| 181 |
Q1 |
Science (General) |
Q |
| 182 |
QA |
Mathematics |
Q |
| 183 |
QA75 |
Electronic computers. Computer science |
QA |
| 184 |
QA76 |
Computer software |
QA |
| 185 |
QB |
Astronomy |
Q |
| 186 |
QC |
Physics |
Q |
| 187 |
QD |
Chemistry |
Q |
| 188 |
QE |
Geology |
Q |
| 189 |
QH |
Natural history |
Q |
| 190 |
QH301 |
Biology |
QH |
| 191 |
QH426 |
Genetics |
QH |
| 192 |
QK |
Botany |
Q |
| 193 |
QL |
Zoology |
Q |
| 194 |
QM |
Human anatomy |
Q |
| 195 |
QP |
Physiology |
Q |
| 196 |
QR |
Microbiology |
Q |
| 197 |
QR180 |
Immunology |
QR |
| 198 |
QR355 |
Virology |
QR |
| 199 |
R |
Medicine |
subjects |
| 200 |
R1 |
Medicine (General) |
R |
| 201 |
RA |
Public aspects of medicine |
R |
| 202 |
RA0421 |
Public health. Hygiene. Preventive Medicine |
RA |
| 203 |
RA1001 |
Forensic Medicine. Medical jurisprudence. Legal medicine |
RA |
| 204 |
RB |
Pathology |
R |
| 205 |
RC |
Internal medicine |
R |
| 206 |
RC0254 |
Neoplasms. Tumors. Oncology (including Cancer) |
RC |
| 207 |
RC0321 |
Neuroscience. Biological psychiatry. Neuropsychiatry |
RC |
| 208 |
RC1200 |
Sports Medicine |
RC |
| 209 |
RD |
Surgery |
R |
| 210 |
RE |
Ophthalmology |
R |
| 211 |
RF |
Otorhinolaryngology |
R |
| 212 |
RG |
Gynecology and obstetrics |
R |
| 213 |
RJ |
Pediatrics |
R |
| 214 |
RJ101 |
Child Health. Child health services |
RJ |
| 215 |
RK |
Dentistry |
R |
| 216 |
RL |
Dermatology |
R |
| 217 |
RM |
Therapeutics. Pharmacology |
R |
| 218 |
RS |
Pharmacy and materia medica |
R |
| 219 |
RT |
Nursing |
R |
| 220 |
RV |
Botanic, Thomsonian, and eclectic medicine |
R |
| 221 |
RX |
Homeopathy |
R |
| 222 |
RZ |
Other systems of medicine |
R |
| 223 |
S |
Agriculture |
subjects |
| 224 |
S1 |
Agriculture (General) |
S |
| 225 |
SB |
Plant culture |
S |
| 226 |
SD |
Forestry |
S |
| 227 |
SF |
Animal culture |
S |
| 228 |
SH |
Aquaculture. Fisheries. Angling |
S |
| 229 |
SK |
Hunting sports |
S |
| 230 |
T |
Technology |
subjects |
| 231 |
T1 |
Technology (General) |
T |
| 232 |
T201 |
Patents. Trademarks |
T1 |
| 233 |
TA |
Engineering (General). Civil engineering (General) |
T |
| 234 |
TC |
Hydraulic engineering. Ocean engineering |
T |
| 235 |
TD |
Environmental technology. Sanitary engineering |
T |
| 236 |
TE |
Highway engineering. Roads and pavements |
T |
| 237 |
TF |
Railroad engineering and operation |
T |
| 238 |
TG |
Bridge engineering |
T |
| 239 |
TH |
Building construction |
T |
| 240 |
TJ |
Mechanical engineering and machinery |
T |
| 241 |
TK |
Electrical engineering. Electronics Nuclear engineering |
T |
| 242 |
TL |
Motor vehicles. Aeronautics. Astronautics |
T |
| 243 |
TN |
Mining engineering. Metallurgy |
T |
| 244 |
TP |
Chemical technology |
T |
| 245 |
TR |
Photography |
T |
| 246 |
TS |
Manufactures |
T |
| 247 |
TT |
Handicrafts Arts and crafts |
T |
| 248 |
TX |
Home economics |
T |
| 249 |
U |
Military Science |
subjects |
| 250 |
U1 |
Military Science (General) |
U |
| 251 |
V |
Naval Science |
subjects |
| 252 |
V1 |
Naval Science (General) |
V |
| 253 |
VM |
Naval architecture. Shipbuilding. Marine engineering |
V |
| 254 |
Z |
Bibliography. Library Science. Information Resources |
subjects |
| 255 |
Z004 |
Books. Writing. Paleography |
Z |
| 256 |
Z665 |
Library Science. Information Science |
Z |
| 257 |
Z719 |
Libraries (General) |
Z |
| 258 |
ZA |
Information resources |
Z |
| 259 |
ZA4050 |
Electronic information resources |
ZA |
| 260 |
ZA4450 |
Databases |
ZA |
| 261 |
PL5051-5497 |
Malayan (Indonesian) languages |
PL |
