Classification
100 - Philosophy & psychology
330 - Economics
320 - Political science
21
900 - History & geography
11
300 - Social sciences
4
140 - Specific philosophical schools
3
200 - Religion
3
380 - Commerce, communications & transportation
2
657 - Accounting
2
000 - Computer science, information & general works
1
333 - Economics of land & energy
1
340 - Law
1
700 - The arts; fine & decorative arts
1
780 - Music
1