Classification
200 - Religion
320 - Political science
363 - Other social problems & services
900 - History & geography
700 - The arts; fine & decorative arts
5
000 - Computer science, information & general works
4
100 - Philosophy & psychology
3
300 - Social sciences
3
330 - Economics
3
380 - Commerce, communications & transportation
3
301 - Sociology & anthropology
2
600 - Technology
2
120 - Epistemology, causation & humankind
1
140 - Specific philosophical schools
1
304 - Factors affecting social behavior
1
333 - Economics of land & energy
1
361 - Social problems & social welfare in general
1
370 - Education
1
400 - Language
1
410 - Linguistics
1
581 - Specific topics in natural history
1
800 - Literature & rhetoric
1