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