Classification
330 - Economics
1,666
320 - Political science
1,555
300 - Social sciences
935
306 - Culture & institutions
410
900 - History & geography
339
304 - Factors affecting social behavior
300
301 - Sociology & anthropology
298
100 - Philosophy & psychology
243
370 - Education
229
333 - Economics of land & energy
193
700 - The arts; fine & decorative arts
184
305 - Social groups
180
500 - Natural sciences & mathematics
158
302 - Social interaction
156
363 - Other social problems & services
156
303 - Social processes
134
340 - Law
133
327 - International relations
120
610 - Medicine & health
113
600 - Technology
111
006 - Special computer methods
110
005 - Computer programming, programs & data
106
361 - Social problems & social welfare in general
106
140 - Specific philosophical schools
100
519 - Probabilities & applied mathematics
98
200 - Religion
97
658 - General management
95
338 - Production
93
004 - Data processing & computer science
78
380 - Commerce, communications & transportation
78
170 - Ethics
73
371 - Schools & their activities; special education
68
000 - Computer science, information & general works
67
620 - Engineering & allied operations
51
331 - Labor economics
47
364 - Criminology
46
307 - Communities
43
150 - Psychology
41
324 - The political process
39
400 - Language
38
003 - Systems
37
800 - Literature & rhetoric
37
297 - Islam, Babism & Bahai Faith
36
025 - Library operations
35
350 - Public administration & military science
33
621 - Applied physics
33
379 - Public policy issues in education
32
530 - Physics
32
630 - Agriculture & related technologies
31
341 - Law of nations
30
more ...