Classification
100 - Philosophy & psychology
200 - Religion
320 - Political science
370 - Education
170 - Ethics
2
333 - Economics of land & energy
2
700 - The arts; fine & decorative arts
2
140 - Specific philosophical schools
1
300 - Social sciences
1
363 - Other social problems & services
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
610 - Medicine & health
1
900 - History & geography
1