Classification
100 - Philosophy & psychology
330 - Economics
800 - Literature & rhetoric
320 - Political science
6
900 - History & geography
6
700 - The arts; fine & decorative arts
5
000 - Computer science, information & general works
3
200 - Religion
3
300 - Social sciences
3
363 - Other social problems & services
3
140 - Specific philosophical schools
2
301 - Sociology & anthropology
2
333 - Economics of land & energy
2
410 - Linguistics
2
581 - Specific topics in natural history
2
610 - Medicine & health
2
120 - Epistemology, causation & humankind
1
304 - Factors affecting social behavior
1
370 - Education
1
380 - Commerce, communications & transportation
1
400 - Language
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
600 - Technology
1