Classification
000 - Computer science, information & general works
300 - Social sciences
340 - Law
363 - Other social problems & services
320 - Political science
3
700 - The arts; fine & decorative arts
3
140 - Specific philosophical schools
2
301 - Sociology & anthropology
2
330 - Economics
2
333 - Economics of land & energy
2
370 - Education
2
100 - Philosophy & psychology
1
304 - Factors affecting social behavior
1
380 - Commerce, communications & transportation
1
551 - Geology, hydrology & meteorology
1
900 - History & geography
1