Classification
658 - General management
330 - Economics
5,524
300 - Social sciences
2,178
302 - Social interaction
2,044
500 - Natural sciences & mathematics
1,628
670 - Manufacturing
1,507
338 - Production
1,263
331 - Labor economics
1,155
381 - Commerce
1,146
650 - Management & auxiliary services
732
384 - Communications; telecommunication
556
332 - Financial economics
555
158 - Applied psychology
433
153 - Mental processes & intelligence
349
620 - Engineering & allied operations
319
380 - Commerce, communications & transportation
313
368 - Insurance
198
000 - Computer science, information & general works
158
006 - Special computer methods
144
001 - Knowledge
125
005 - Computer programming, programs & data
111
659 - Advertising & public relations
107
745 - Decorative arts
100
303 - Social processes
75
170 - Ethics
73
600 - Technology
70
333 - Economics of land & energy
67
304 - Factors affecting social behavior
62
339 - Macroeconomics & related topics
59
363 - Other social problems & services
59
150 - Psychology
57
004 - Data processing & computer science
55
700 - The arts; fine & decorative arts
48
808 - Rhetoric & collections of literature
42
610 - Medicine & health
41
510 - Mathematics
37
519 - Probabilities & applied mathematics
34
320 - Political science
27
174 - Occupational ethics
26
374 - Adult education
26
900 - History & geography
26
155 - Differential & developmental psychology
25
336 - Public finance
23
657 - Accounting
23
651 - Office services
22
140 - Specific philosophical schools
21
011 - Bibliographies
17
370 - Education
17
800 - Literature & rhetoric
17
551 - Geology, hydrology & meteorology
13
more ...