Classification
900 - History & geography
443
700 - The arts; fine & decorative arts
63
320 - Political science
60
300 - Social sciences
58
200 - Religion
38
330 - Economics
37
800 - Literature & rhetoric
35
100 - Philosophy & psychology
34
610 - Medicine & health
30
140 - Specific philosophical schools
19
301 - Sociology & anthropology
19
380 - Commerce, communications & transportation
18
780 - Music
17
340 - Law
16
304 - Factors affecting social behavior
15
576 - Genetics & evolution
14
000 - Computer science, information & general works
13
370 - Education
13
333 - Economics of land & energy
12
400 - Language
11
296 - Judaism
8
410 - Linguistics
8
720 - Architecture
8
170 - Ethics
7
363 - Other social problems & services
7
361 - Social problems & social welfare in general
6
600 - Technology
6
630 - Agriculture & related technologies
5
297 - Islam, Babism & Bahai Faith
4
551 - Geology, hydrology & meteorology
4
620 - Engineering & allied operations
4
500 - Natural sciences & mathematics
3
770 - Photography, photographs & computer art
3
364 - Criminology
2
398 - Folklore
2
540 - Chemistry & allied sciences
2
791 - Public performances
2
120 - Epistemology, causation & humankind
1
350 - Public administration & military science
1
360 - Social problems & services; associations
1
520 - Astronomy & allied sciences
1
530 - Physics
1
581 - Specific topics in natural history
1
920 - Biography, genealogy & insignia
1