Classification
200 - Religion
300 - Social sciences
320 - Political science
380 - Commerce, communications & transportation
900 - History & geography
5
301 - Sociology & anthropology
3
330 - Economics
2
600 - Technology
2
140 - Specific philosophical schools
1
304 - Factors affecting social behavior
1
340 - Law
1
363 - Other social problems & services
1
370 - Education
1
400 - Language
1
800 - Literature & rhetoric
1