Classification
301 - Sociology & anthropology
340 - Law
300 - Social sciences
43
320 - Political science
27
900 - History & geography
26
100 - Philosophy & psychology
19
330 - Economics
18
140 - Specific philosophical schools
15
200 - Religion
14
700 - The arts; fine & decorative arts
11
333 - Economics of land & energy
9
610 - Medicine & health
9
000 - Computer science, information & general works
8
170 - Ethics
8
363 - Other social problems & services
8
364 - Criminology
8
304 - Factors affecting social behavior
7
370 - Education
7
600 - Technology
6
380 - Commerce, communications & transportation
5
400 - Language
4
800 - Literature & rhetoric
4
297 - Islam, Babism & Bahai Faith
3
410 - Linguistics
3
360 - Social problems & services; associations
2
361 - Social problems & social welfare in general
2
620 - Engineering & allied operations
2
720 - Architecture
2
350 - Public administration & military science
1
398 - Folklore
1
530 - Physics
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
780 - Music
1