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