Classification
320 - Political science
330 - Economics
213
900 - History & geography
52
300 - Social sciences
48
340 - Law
36
576 - Genetics & evolution
36
200 - Religion
3
000 - Computer science, information & general works
2
170 - Ethics
2
600 - Technology
2
333 - Economics of land & energy
1
363 - Other social problems & services
1
370 - Education
1
380 - Commerce, communications & transportation
1
657 - Accounting
1
700 - The arts; fine & decorative arts
1