Classification
320 - Political science
380 - Commerce, communications & transportation
100 - Philosophy & psychology
3
300 - Social sciences
3
900 - History & geography
3
170 - Ethics
2
200 - Religion
2
330 - Economics
2
370 - Education
2
610 - Medicine & health
2
780 - Music
2
340 - Law
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
658 - General management
1