Classification
100 - Philosophy & psychology
170 - Ethics
340 - Law
900 - History & geography
320 - Political science
3
140 - Specific philosophical schools
2
120 - Epistemology, causation & humankind
1
200 - Religion
1
300 - Social sciences
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
330 - Economics
1
361 - Social problems & social welfare in general
1
370 - Education
1
600 - Technology
1
610 - Medicine & health
1