Classification
100 - Philosophy & psychology
170 - Ethics
300 - Social sciences
320 - Political science
4
340 - Law
330 - Economics
2
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
363 - Other social problems & services
1
364 - Criminology
1
370 - Education
1
530 - Physics
1
600 - Technology
1
900 - History & geography
1