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