Classification
100 - Philosophy & psychology
330 - Economics
320 - Political science
8
900 - History & geography
3
170 - Ethics
2
300 - Social sciences
2
340 - Law
2
140 - Specific philosophical schools
1
200 - Religion
1
350 - Public administration & military science
1
380 - Commerce, communications & transportation
1
500 - Natural sciences & mathematics
1
610 - Medicine & health
1
700 - The arts; fine & decorative arts
1
800 - Literature & rhetoric
1