Classification
320 - Political science
4
330 - Economics
550 - Earth sciences
000 - Computer science, information & general works
3
363 - Other social problems & services
3
610 - Medicine & health
3
304 - Factors affecting social behavior
2
333 - Economics of land & energy
2
370 - Education
2
551 - Geology, hydrology & meteorology
2
700 - The arts; fine & decorative arts
2
900 - History & geography
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
300 - Social sciences
1
380 - Commerce, communications & transportation
1
658 - General management
1
720 - Architecture
1