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