Classification
000 - Computer science, information & general works
140 - Specific philosophical schools
300 - Social sciences
363 - Other social problems & services
4
700 - The arts; fine & decorative arts
4
320 - Political science
3
330 - Economics
3
333 - Economics of land & energy
3
301 - Sociology & anthropology
2
340 - Law
2
304 - Factors affecting social behavior
1
551 - Geology, hydrology & meteorology
1
900 - History & geography
1