Classification
900 - History & geography
6
200 - Religion
4
300 - Social sciences
4
320 - Political science
3
330 - Economics
2
610 - Medicine & health
2
700 - The arts; fine & decorative arts
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
301 - Sociology & anthropology
1
340 - Law
1
370 - Education
1
800 - Literature & rhetoric
1