Classification
100 - Philosophy & psychology
301 - Sociology & anthropology
320 - Political science
530 - Physics
140 - Specific philosophical schools
2
200 - Religion
2
300 - Social sciences
2
900 - History & geography
2
330 - Economics
1
340 - Law
1
581 - Specific topics in natural history
1
700 - The arts; fine & decorative arts
1