Classification
100 - Philosophy & psychology
320 - Political science
340 - Law
140 - Specific philosophical schools
5
170 - Ethics
4
900 - History & geography
4
300 - Social sciences
3
200 - Religion
2
330 - Economics
2
700 - The arts; fine & decorative arts
2
296 - Judaism
1
301 - Sociology & anthropology
1
333 - Economics of land & energy
1
363 - Other social problems & services
1
581 - Specific topics in natural history
1
770 - Photography, photographs & computer art
1
800 - Literature & rhetoric
1