Classification
100 - Philosophy & psychology
170 - Ethics
340 - Law
363 - Other social problems & services
320 - Political science
4
700 - The arts; fine & decorative arts
3
140 - Specific philosophical schools
2
200 - Religion
2
333 - Economics of land & energy
2
581 - Specific topics in natural history
2
300 - Social sciences
1
330 - Economics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
610 - Medicine & health
1