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