Classification
301 - Sociology & anthropology
98
900 - History & geography
44
300 - Social sciences
30
320 - Political science
20
700 - The arts; fine & decorative arts
17
800 - Literature & rhetoric
14
200 - Religion
13
398 - Folklore
9
330 - Economics
7
363 - Other social problems & services
7
380 - Commerce, communications & transportation
7
780 - Music
7
000 - Computer science, information & general works
6
100 - Philosophy & psychology
6
400 - Language
6
140 - Specific philosophical schools
5
304 - Factors affecting social behavior
5
333 - Economics of land & energy
5
340 - Law
5
370 - Education
4
600 - Technology
4
610 - Medicine & health
4
297 - Islam, Babism & Bahai Faith
3
410 - Linguistics
3
170 - Ethics
2
576 - Genetics & evolution
2
630 - Agriculture & related technologies
2
720 - Architecture
2
361 - Social problems & social welfare in general
1
364 - Criminology
1
581 - Specific topics in natural history
1
620 - Engineering & allied operations
1