Classification
200 - Religion
700 - The arts; fine & decorative arts
140 - Specific philosophical schools
4
320 - Political science
4
000 - Computer science, information & general works
3
333 - Economics of land & energy
3
370 - Education
3
610 - Medicine & health
3
330 - Economics
2
361 - Social problems & social welfare in general
2
363 - Other social problems & services
2
380 - Commerce, communications & transportation
2
581 - Specific topics in natural history
2
600 - Technology
2
900 - History & geography
2
100 - Philosophy & psychology
1
300 - Social sciences
1
301 - Sociology & anthropology
1
360 - Social problems & services; associations
1
400 - Language
1
780 - Music
1
800 - Literature & rhetoric
1