Classification
140 - Specific philosophical schools
170 - Ethics
200 - Religion
301 - Sociology & anthropology
100 - Philosophy & psychology
3
300 - Social sciences
2
320 - Political science
2
700 - The arts; fine & decorative arts
2
330 - Economics
1
333 - Economics of land & energy
1
363 - Other social problems & services
1
520 - Astronomy & allied sciences
1
581 - Specific topics in natural history
1
600 - Technology
1
610 - Medicine & health
1
900 - History & geography
1