Classification
100 - Philosophy & psychology
330 - Economics
900 - History & geography
5
320 - Political science
4
333 - Economics of land & energy
2
340 - Law
2
576 - Genetics & evolution
2
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
170 - Ethics
1
361 - Social problems & social welfare in general
1
380 - Commerce, communications & transportation
1
658 - General management
1
800 - Literature & rhetoric
1