Classification
100 - Philosophy & psychology
170 - Ethics
200 - Religion
900 - History & geography
320 - Political science
5
140 - Specific philosophical schools
4
120 - Epistemology, causation & humankind
1
160 - Logic
1
300 - Social sciences
1
301 - Sociology & anthropology
1
333 - Economics of land & energy
1
340 - Law
1
363 - Other social problems & services
1
370 - Education
1
581 - Specific topics in natural history
1