Classification
261 - Social theology
1
300 - Social sciences
2
303 - Social processes
1
320 - Political science
10
322 - Relation of state to organized groups
2
327 - International relations
2
330 - Economics
7
333 - Economics of land & energy
1
338 - Production
1
340 - Law
1
341 - Law of nations
2
355 - Military science
8
380 - Commerce, communications & transportation
1
382 - International commerce
1
388 - Transportation; ground transportation
1
500 - Natural sciences & mathematics
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
658 - General management
1
820 - English & Old English literatures
1
900 - History & geography
5
956 - Middle East (Near East)
2
970 - History of North America
23
972 - Middle America; Mexico
1