Classification
320 - Political science
88
330 - Economics
29
340 - Law
25
900 - History & geography
19
333 - Economics of land & energy
16
300 - Social sciences
13
100 - Philosophy & psychology
11
363 - Other social problems & services
9
700 - The arts; fine & decorative arts
9
380 - Commerce, communications & transportation
8
170 - Ethics
4
200 - Religion
4
600 - Technology
4
370 - Education
3
304 - Factors affecting social behavior
2
361 - Social problems & social welfare in general
2
576 - Genetics & evolution
2
610 - Medicine & health
2
140 - Specific philosophical schools
1
350 - Public administration & military science
1
400 - Language
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1