Classification
330 - Economics
320 - Political science
42,235
658 - General management
7,715
300 - Social sciences
5,766
340 - Law
4,934
900 - History & geography
4,264
338 - Production
2,635
302 - Social interaction
2,340
500 - Natural sciences & mathematics
2,058
700 - The arts; fine & decorative arts
1,835
331 - Labor economics
1,773
630 - Agriculture & related technologies
1,687
333 - Economics of land & energy
1,659
610 - Medicine & health
1,642
670 - Manufacturing
1,553
332 - Financial economics
1,544
650 - Management & auxiliary services
1,516
381 - Commerce
1,390
000 - Computer science, information & general works
1,352
600 - Technology
1,229
363 - Other social problems & services
1,145
380 - Commerce, communications & transportation
1,136
158 - Applied psychology
1,084
370 - Education
976
384 - Communications; telecommunication
919
304 - Factors affecting social behavior
864
620 - Engineering & allied operations
812
005 - Computer programming, programs & data
671
153 - Mental processes & intelligence
634
170 - Ethics
475
576 - Genetics & evolution
475
200 - Religion
455
140 - Specific philosophical schools
407
800 - Literature & rhetoric
311
006 - Special computer methods
285
100 - Philosophy & psychology
270
657 - Accounting
228
551 - Geology, hydrology & meteorology
225
001 - Knowledge
215
368 - Insurance
208
004 - Data processing & computer science
182
580 - Plants (Botany)
179
745 - Decorative arts
173
336 - Public finance
168
808 - Rhetoric & collections of literature
158
339 - Macroeconomics & related topics
154
659 - Advertising & public relations
138
720 - Architecture
130
150 - Psychology
114
581 - Specific topics in natural history
111
more ...