Classification
300 - Social sciences
330 - Economics
320 - Political science
3,328
658 - General management
2,317
302 - Social interaction
1,882
500 - Natural sciences & mathematics
1,408
670 - Manufacturing
1,365
338 - Production
619
630 - Agriculture & related technologies
563
331 - Labor economics
548
900 - History & geography
365
650 - Management & auxiliary services
300
340 - Law
283
381 - Commerce
272
384 - Communications; telecommunication
224
158 - Applied psychology
220
153 - Mental processes & intelligence
189
380 - Commerce, communications & transportation
159
620 - Engineering & allied operations
94
332 - Financial economics
84
700 - The arts; fine & decorative arts
78
100 - Philosophy & psychology
64
333 - Economics of land & energy
62
000 - Computer science, information & general works
61
576 - Genetics & evolution
60
170 - Ethics
59
001 - Knowledge
54
301 - Sociology & anthropology
51
600 - Technology
51
140 - Specific philosophical schools
48
745 - Decorative arts
46
370 - Education
42
368 - Insurance
40
610 - Medicine & health
38
363 - Other social problems & services
35
200 - Religion
30
150 - Psychology
28
304 - Factors affecting social behavior
23
303 - Social processes
22
659 - Advertising & public relations
22
800 - Literature & rhetoric
22
510 - Mathematics
17
006 - Special computer methods
16
361 - Social problems & social welfare in general
14
400 - Language
13
005 - Computer programming, programs & data
12
155 - Differential & developmental psychology
11
519 - Probabilities & applied mathematics
11
551 - Geology, hydrology & meteorology
11
657 - Accounting
11
more ...