Classification
340 - Law
330 - Economics
42
320 - Political science
39
380 - Commerce, communications & transportation
5
333 - Economics of land & energy
4
900 - History & geography
4
363 - Other social problems & services
3
610 - Medicine & health
3
700 - The arts; fine & decorative arts
3
000 - Computer science, information & general works
2
170 - Ethics
1
200 - Religion
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
576 - Genetics & evolution
1
630 - Agriculture & related technologies
1
800 - Literature & rhetoric
1