Classification
100 - Philosophy & psychology
170 - Ethics
330 - Economics
2
658 - General management
320 - Political science
1
333 - Economics of land & energy
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
900 - History & geography
1