Classification
973 - United States
658 - General management
4
900 - History & geography
3
320 - Political science
2
330 - Economics
2
800 - Literature & rhetoric
2
001 - Knowledge
1
100 - Philosophy & psychology
1
158 - Applied psychology
1
170 - Ethics
1
200 - Religion
1
300 - Social sciences
1
301 - Sociology & anthropology
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1