Classification
658 - General management
15,656
005 - Computer programming, programs & data
12,740
330 - Economics
10,700
331 - Labor economics
7,898
500 - Natural sciences & mathematics
7,678
000 - Computer science, information & general works
6,877
620 - Engineering & allied operations
5,449
006 - Special computer methods
4,896
302 - Social interaction
3,998
745 - Decorative arts
3,995
004 - Data processing & computer science
3,798
338 - Production
3,590
384 - Communications; telecommunication
3,295
300 - Social sciences
3,252
332 - Financial economics
2,415
381 - Commerce
2,377
621 - Applied physics
1,871
650 - Management & auxiliary services
1,833
670 - Manufacturing
1,807
158 - Applied psychology
1,564
770 - Photography, photographs & computer art
1,542
374 - Adult education
1,390
153 - Mental processes & intelligence
1,168
510 - Mathematics
998
519 - Probabilities & applied mathematics
882
380 - Commerce, communications & transportation
714
001 - Knowledge
617
741 - Drawing & drawings
473
794 - Indoor games of skill
464
629 - Other branches of engineering
455
791 - Public performances
448
778 - Fields & kinds of photography
435
771 - Techniques, equipment & materials
385
600 - Technology
369
303 - Social processes
360
368 - Insurance
347
363 - Other social problems & services
346
515 - Analysis
343
777 - [Unassigned]
327
011 - Bibliographies
320
364 - Criminology
303
808 - Rhetoric & collections of literature
290
781 - General principles & musical forms
288
657 - Accounting
280
339 - Macroeconomics & related topics
273
610 - Medicine & health
271
333 - Economics of land & energy
260
250 - Christian orders & local church
249
659 - Advertising & public relations
243
362 - Social welfare problems & services
235
more ...