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