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