Classification
658 - General management
17,389
005 - Computer programming, programs & data
14,995
330 - Economics
11,333
000 - Computer science, information & general works
10,188
331 - Labor economics
8,448
500 - Natural sciences & mathematics
8,284
620 - Engineering & allied operations
5,716
006 - Special computer methods
5,705
745 - Decorative arts
4,366
004 - Data processing & computer science
4,314
302 - Social interaction
4,272
338 - Production
3,769
384 - Communications; telecommunication
3,504
300 - Social sciences
3,425
381 - Commerce
2,598
332 - Financial economics
2,518
650 - Management & auxiliary services
2,063
621 - Applied physics
1,965
670 - Manufacturing
1,963
770 - Photography, photographs & computer art
1,926
158 - Applied psychology
1,713
374 - Adult education
1,632
153 - Mental processes & intelligence
1,269
510 - Mathematics
932
519 - Probabilities & applied mathematics
865
380 - Commerce, communications & transportation
768
001 - Knowledge
666
778 - Fields & kinds of photography
549
794 - Indoor games of skill
521
741 - Drawing & drawings
512
771 - Techniques, equipment & materials
491
629 - Other branches of engineering
483
011 - Bibliographies
477
791 - Public performances
413
303 - Social processes
367
368 - Insurance
352
777 - [Unassigned]
350
600 - Technology
336
657 - Accounting
308
808 - Rhetoric & collections of literature
300
364 - Criminology
292
781 - General principles & musical forms
291
339 - Macroeconomics & related topics
280
659 - Advertising & public relations
276
150 - Psychology
243
170 - Ethics
242
155 - Differential & developmental psychology
222
363 - Other social problems & services
211
025 - Library operations
200
740 - Drawing & decorative arts
198
more ...