Classification
301 - Sociology & anthropology
300 - Social sciences
22
330 - Economics
5
900 - History & geography
4
000 - Computer science, information & general works
3
140 - Specific philosophical schools
3
700 - The arts; fine & decorative arts
3
100 - Philosophy & psychology
2
304 - Factors affecting social behavior
2
320 - Political science
2
576 - Genetics & evolution
2
200 - Religion
1
333 - Economics of land & energy
1
340 - Law
1
363 - Other social problems & services
1
370 - Education
1
380 - Commerce, communications & transportation
1
410 - Linguistics
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
610 - Medicine & health
1