Classification
300 - Social sciences
320 - Political science
3
363 - Other social problems & services
330 - Economics
2
370 - Education
2
140 - Specific philosophical schools
1
200 - Religion
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
340 - Law
1
380 - Commerce, communications & transportation
1
551 - Geology, hydrology & meteorology
1
600 - Technology
1
700 - The arts; fine & decorative arts
1
720 - Architecture
1
900 - History & geography
1