Classification
301 - Sociology & anthropology
300 - Social sciences
97
900 - History & geography
44
100 - Philosophy & psychology
39
320 - Political science
38
140 - Specific philosophical schools
25
200 - Religion
25
700 - The arts; fine & decorative arts
25
610 - Medicine & health
22
363 - Other social problems & services
20
340 - Law
18
330 - Economics
16
370 - Education
14
333 - Economics of land & energy
12
600 - Technology
12
800 - Literature & rhetoric
11
000 - Computer science, information & general works
10
304 - Factors affecting social behavior
8
380 - Commerce, communications & transportation
8
410 - Linguistics
6
581 - Specific topics in natural history
6
170 - Ethics
5
297 - Islam, Babism & Bahai Faith
5
400 - Language
5
720 - Architecture
5
780 - Music
5
364 - Criminology
4
398 - Folklore
4
590 - Animals (Zoology)
4
620 - Engineering & allied operations
4
120 - Epistemology, causation & humankind
3
500 - Natural sciences & mathematics
3
530 - Physics
3
576 - Genetics & evolution
3
360 - Social problems & services; associations
2
361 - Social problems & social welfare in general
2
630 - Agriculture & related technologies
2
520 - Astronomy & allied sciences
1
540 - Chemistry & allied sciences
1
658 - General management
1
920 - Biography, genealogy & insignia
1