Classification
370 - Education
320 - Political science
10
100 - Philosophy & psychology
5
300 - Social sciences
5
330 - Economics
4
900 - History & geography
4
140 - Specific philosophical schools
3
170 - Ethics
2
301 - Sociology & anthropology
2
340 - Law
2
600 - Technology
2
304 - Factors affecting social behavior
1
400 - Language
1
576 - Genetics & evolution
1
620 - Engineering & allied operations
1