Classification
658 - General management
15,394
005 - Computer programming, programs & data
13,043
330 - Economics
10,137
500 - Natural sciences & mathematics
7,509
331 - Labor economics
7,211
000 - Computer science, information & general works
7,209
006 - Special computer methods
5,010
620 - Engineering & allied operations
4,994
302 - Social interaction
3,967
745 - Decorative arts
3,859
004 - Data processing & computer science
3,468
300 - Social sciences
3,258
338 - Production
3,210
384 - Communications; telecommunication
3,042
381 - Commerce
2,344
332 - Financial economics
2,102
650 - Management & auxiliary services
1,930
670 - Manufacturing
1,786
621 - Applied physics
1,648
158 - Applied psychology
1,632
770 - Photography, photographs & computer art
1,612
153 - Mental processes & intelligence
1,194
510 - Mathematics
908
519 - Probabilities & applied mathematics
838
380 - Commerce, communications & transportation
749
001 - Knowledge
481
778 - Fields & kinds of photography
445
629 - Other branches of engineering
439
794 - Indoor games of skill
437
741 - Drawing & drawings
388
771 - Techniques, equipment & materials
345
600 - Technology
334
303 - Social processes
324
011 - Bibliographies
316
368 - Insurance
306
791 - Public performances
298
515 - Analysis
284
777 - [Unassigned]
281
808 - Rhetoric & collections of literature
264
364 - Criminology
263
781 - General principles & musical forms
263
659 - Advertising & public relations
258
170 - Ethics
248
374 - Adult education
246
150 - Psychology
239
339 - Macroeconomics & related topics
235
363 - Other social problems & services
221
700 - The arts; fine & decorative arts
221
155 - Differential & developmental psychology
214
610 - Medicine & health
213
more ...