Classification
333 - Economics of land & energy
44
330 - Economics
19
304 - Factors affecting social behavior
4
346 - Private law
4
320 - Political science
3
341 - Law of nations
3
363 - Other social problems & services
3
000 - Computer science, information & general works
2
387 - Water, air & space transportation
2
551 - Geology, hydrology & meteorology
2
303 - Social processes
1
340 - Law
1
352 - General considerations of public administration
1
620 - Engineering & allied operations
1
627 - Hydraulic engineering
1
630 - Agriculture & related technologies
1
658 - General management
1
900 - History & geography
1