Classification
100 - Philosophy & psychology
170 - Ethics
320 - Political science
330 - Economics
600 - Technology
300 - Social sciences
2
610 - Medicine & health
2
140 - Specific philosophical schools
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
340 - Law
1
370 - Education
1
620 - Engineering & allied operations
1
900 - History & geography
1