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