Classification
200 - Religion
658 - General management
330 - Economics
3
170 - Ethics
2
610 - Medicine & health
2
000 - Computer science, information & general works
1
100 - Philosophy & psychology
1
320 - Political science
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
600 - Technology
1
700 - The arts; fine & decorative arts
1
900 - History & geography
1