Classification
300 - Social sciences
5
370 - Education
5
900 - History & geography
100 - Philosophy & psychology
4
320 - Political science
2
333 - Economics of land & energy
2
700 - The arts; fine & decorative arts
2
140 - Specific philosophical schools
1
301 - Sociology & anthropology
1
350 - Public administration & military science
1
363 - Other social problems & services
1
800 - Literature & rhetoric
1