Classification
100 - Philosophy & psychology
301 - Sociology & anthropology
300 - Social sciences
4
400 - Language
3
610 - Medicine & health
3
140 - Specific philosophical schools
2
333 - Economics of land & energy
2
370 - Education
2
700 - The arts; fine & decorative arts
2
000 - Computer science, information & general works
1
170 - Ethics
1
200 - Religion
1
304 - Factors affecting social behavior
1
320 - Political science
1
330 - Economics
1
380 - Commerce, communications & transportation
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
600 - Technology
1
900 - History & geography
1