Classification
320 - Political science
330 - Economics
8
333 - Economics of land & energy
3
900 - History & geography
3
200 - Religion
1
300 - Social sciences
1
304 - Factors affecting social behavior
1
336 - Public finance
1
340 - Law
1
350 - Public administration & military science
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
600 - Technology
1
610 - Medicine & health
1