Classification
170 - Ethics
300 - Social sciences
340 - Law
370 - Education
610 - Medicine & health
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
320 - Political science
1
330 - Economics
1
600 - Technology
1
900 - History & geography
1