Classification
170 - Ethics
320 - Political science
330 - Economics
363 - Other social problems & services
2
380 - Commerce, communications & transportation
2
658 - General management
2
100 - Philosophy & psychology
1
333 - Economics of land & energy
1
350 - Public administration & military science
1
370 - Education
1
551 - Geology, hydrology & meteorology
1
700 - The arts; fine & decorative arts
1