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