Classification
361 - Social problems & social welfare in general
330 - Economics
3
200 - Religion
2
320 - Political science
2
650 - Management & auxiliary services
2
000 - Computer science, information & general works
1
100 - Philosophy & psychology
1
300 - Social sciences
1
610 - Medicine & health
1
658 - General management
1
780 - Music
1
900 - History & geography
1