Classification
340 - Law
300 - Social sciences
8
330 - Economics
7
320 - Political science
4
170 - Ethics
3
333 - Economics of land & energy
2
380 - Commerce, communications & transportation
2
610 - Medicine & health
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
361 - Social problems & social welfare in general
1
700 - The arts; fine & decorative arts
1
900 - History & geography
1