Classification
361 - Social problems & social welfare in general
700 - The arts; fine & decorative arts
5
140 - Specific philosophical schools
4
320 - Political science
4
333 - Economics of land & energy
4
363 - Other social problems & services
4
380 - Commerce, communications & transportation
4
610 - Medicine & health
4
900 - History & geography
3
000 - Computer science, information & general works
2
200 - Religion
2
301 - Sociology & anthropology
2
304 - Factors affecting social behavior
2
330 - Economics
2
360 - Social problems & services; associations
2
581 - Specific topics in natural history
2
600 - Technology
2
100 - Philosophy & psychology
1
300 - Social sciences
1
340 - Law
1
400 - Language
1