Classification
320 - Political science
1,829
300 - Social sciences
1,054
330 - Economics
587
306 - Culture & institutions
462
900 - History & geography
375
304 - Factors affecting social behavior
330
301 - Sociology & anthropology
326
100 - Philosophy & psychology
271
370 - Education
257
333 - Economics of land & energy
230
500 - Natural sciences & mathematics
213
700 - The arts; fine & decorative arts
206
305 - Social groups
199
302 - Social interaction
194
363 - Other social problems & services
182
327 - International relations
179
340 - Law
165
303 - Social processes
156
338 - Production
143
658 - General management
138
610 - Medicine & health
137
006 - Special computer methods
127
519 - Probabilities & applied mathematics
124
361 - Social problems & social welfare in general
123
600 - Technology
122
005 - Computer programming, programs & data
117
140 - Specific philosophical schools
111
200 - Religion
110
004 - Data processing & computer science
92
170 - Ethics
84
380 - Commerce, communications & transportation
81
371 - Schools & their activities; special education
80
000 - Computer science, information & general works
69
364 - Criminology
63
331 - Labor economics
56
620 - Engineering & allied operations
56
150 - Psychology
51
003 - Systems
46
324 - The political process
45
307 - Communities
44
379 - Public policy issues in education
44
332 - Financial economics
42
400 - Language
41
530 - Physics
41
800 - Literature & rhetoric
41
025 - Library operations
38
341 - Law of nations
37
297 - Islam, Babism & Bahai Faith
36
362 - Social welfare problems & services
36
350 - Public administration & military science
35
more ...