Classification
320 - Political science
223
900 - History & geography
74
330 - Economics
59
943 - Central Europe; Germany
44
300 - Social sciences
22
820 - English & Old English literatures
20
340 - Law
14
700 - The arts; fine & decorative arts
12
940 - History of Europe
12
322 - Relation of state to organized groups
7
200 - Religion
6
324 - The political process
6
327 - International relations
5
370 - Education
5
576 - Genetics & evolution
5
306 - Culture & institutions
3
325 - International migration & colonization
3
328 - The legislative process
3
338 - Production
3
363 - Other social problems & services
3
630 - Agriculture & related technologies
3
170 - Ethics
2
303 - Social processes
2
333 - Economics of land & energy
2
355 - Military science
2
362 - Social welfare problems & services
2
790 - Recreational & performing arts
2
800 - Literature & rhetoric
2
100 - Philosophy & psychology
1
280 - Christian denominations & sects
1
296 - Judaism
1
302 - Social interaction
1
305 - Social groups
1
307 - Communities
1
321 - Systems of governments & states
1
323 - Civil & political rights
1
337 - International economics
1
345 - Criminal law
1
347 - Civil procedure & courts
1
349 - Law of specific jurisdictions & areas
1
351 - Public administration
1
361 - Social problems & social welfare in general
1
364 - Criminology
1
378 - Higher education
1
379 - Public policy issues in education
1
400 - Language
1
647 - Management of public households
1
831 - German poetry
1
909 - World history
1