Classification
000 - Computer science, information & general works
300 - Social sciences
3
320 - Political science
3
900 - History & geography
3
363 - Other social problems & services
2
380 - Commerce, communications & transportation
2
700 - The arts; fine & decorative arts
2
100 - Philosophy & psychology
1
200 - Religion
1
304 - Factors affecting social behavior
1
330 - Economics
1
610 - Medicine & health
1