Classification
100 - Philosophy & psychology
4
140 - Specific philosophical schools
3
170 - Ethics
2
200 - Religion
1
300 - Social sciences
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
320 - Political science
7
330 - Economics
5
333 - Economics of land & energy
1
340 - Law
1
360 - Social problems & services; associations
2
361 - Social problems & social welfare in general
500 - Natural sciences & mathematics
1
610 - Medicine & health
1
780 - Music
1
900 - History & geography
3