Classification
355 - Military science
161
305 - Social groups
98
362 - Social welfare problems & services
73
363 - Other social problems & services
73
327 - International relations
70
320 - Political science
61
306 - Culture & institutions
49
338 - Production
43
303 - Social processes
39
341 - Law of nations
34
791 - Public performances
31
330 - Economics
29
333 - Economics of land & energy
27
331 - Labor economics
26
940 - History of Europe
23
296 - Judaism
22
324 - The political process
22
358 - Air & other specialized forces
21
371 - Schools & their activities; special education
21
304 - Factors affecting social behavior
20
302 - Social interaction
18
323 - Civil & political rights
18
959 - Southeast Asia
18
322 - Relation of state to organized groups
17
709 - Historical, geographic & persons treatment
17
378 - Higher education
16
973 - United States
16
951 - China & adjacent areas
15
956 - Middle East (Near East)
15
307 - Communities
13
342 - Constitutional & administrative law
13
364 - Criminology
12
947 - Eastern Europe; Russia
12
346 - Private law
11
379 - Public policy issues in education
11
658 - General management
11
958 - Central Asia
11
994 - Australia
11
995 - Melanesia; New Guinea
11
300 - Social sciences
10
301 - Sociology & anthropology
10
359 - Sea forces & warfare
10
382 - International commerce
10
809 - History, description & criticism
10
949 - Other parts of Europe
10
996 - Other parts of Pacific; Polynesia
10
325 - International migration & colonization
9
337 - International economics
9
347 - Civil procedure & courts
9
499 - Austronesian & other languages
9
more ...