Classification
100 - Philosophy & psychology
170 - Ethics
300 - Social sciences
320 - Political science
200 - Religion
7
140 - Specific philosophical schools
6
330 - Economics
6
340 - Law
5
301 - Sociology & anthropology
4
363 - Other social problems & services
3
600 - Technology
3
700 - The arts; fine & decorative arts
3
900 - History & geography
3
000 - Computer science, information & general works
2
361 - Social problems & social welfare in general
2
370 - Education
2
581 - Specific topics in natural history
2
120 - Epistemology, causation & humankind
1
304 - Factors affecting social behavior
1
333 - Economics of land & energy
1
360 - Social problems & services; associations
1
364 - Criminology
1
530 - Physics
1
610 - Medicine & health
1