Classification
320 - Political science
20
300 - Social sciences
10
340 - Law
4
327 - International relations
3
900 - History & geography
3
909 - World history
3
304 - Factors affecting social behavior
2
330 - Economics
2
333 - Economics of land & energy
2
380 - Commerce, communications & transportation
2
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
301 - Sociology & anthropology
1
321 - Systems of governments & states
1
341 - Law of nations
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1
600 - Technology
1
700 - The arts; fine & decorative arts
1
949 - Other parts of Europe
1