Classification
330 - Economics
320 - Political science
61,604
300 - Social sciences
9,279
658 - General management
8,227
340 - Law
7,679
900 - History & geography
7,392
338 - Production
2,799
630 - Agriculture & related technologies
2,632
302 - Social interaction
2,447
700 - The arts; fine & decorative arts
2,301
500 - Natural sciences & mathematics
2,230
333 - Economics of land & energy
2,059
610 - Medicine & health
2,057
331 - Labor economics
1,844
650 - Management & auxiliary services
1,692
670 - Manufacturing
1,633
332 - Financial economics
1,577
000 - Computer science, information & general works
1,490
600 - Technology
1,485
576 - Genetics & evolution
1,462
381 - Commerce
1,461
380 - Commerce, communications & transportation
1,412
363 - Other social problems & services
1,386
370 - Education
1,224
158 - Applied psychology
1,172
304 - Factors affecting social behavior
1,154
384 - Communications; telecommunication
1,001
620 - Engineering & allied operations
868
005 - Computer programming, programs & data
770
153 - Mental processes & intelligence
681
200 - Religion
635
170 - Ethics
622
100 - Philosophy & psychology
534
140 - Specific philosophical schools
476
800 - Literature & rhetoric
389
006 - Special computer methods
304
336 - Public finance
303
657 - Accounting
282
551 - Geology, hydrology & meteorology
242
001 - Knowledge
224
368 - Insurance
213
361 - Social problems & social welfare in general
196
580 - Plants (Botany)
195
004 - Data processing & computer science
191
745 - Decorative arts
180
808 - Rhetoric & collections of literature
169
720 - Architecture
158
339 - Macroeconomics & related topics
156
400 - Language
151
659 - Advertising & public relations
144
more ...