Classification
330 - Economics
144,727
820 - English & Old English literatures
80,872
320 - Political science
80,208
600 - Technology
63,531
340 - Law
62,848
658 - General management
34,058
610 - Medicine & health
33,023
005 - Computer programming, programs & data
29,251
300 - Social sciences
27,993
620 - Engineering & allied operations
26,528
500 - Natural sciences & mathematics
25,596
900 - History & geography
23,923
621 - Applied physics
21,759
616 - Diseases
21,671
006 - Special computer methods
18,532
004 - Data processing & computer science
17,842
780 - Music
15,088
000 - Computer science, information & general works
14,525
333 - Economics of land & energy
13,828
650 - Management & auxiliary services
11,696
370 - Education
11,585
700 - The arts; fine & decorative arts
11,576
331 - Labor economics
9,700
530 - Physics
9,037
800 - Literature & rhetoric
8,998
338 - Production
8,675
363 - Other social problems & services
8,540
510 - Mathematics
7,696
380 - Commerce, communications & transportation
7,171
304 - Factors affecting social behavior
6,576
302 - Social interaction
6,502
570 - Life sciences; biology
6,366
519 - Probabilities & applied mathematics
6,258
230 - Christianity & Christian theology
6,189
630 - Agriculture & related technologies
6,162
301 - Sociology & anthropology
6,063
617 - Surgery & related medical specialties
6,062
346 - Private law
5,828
100 - Philosophy & psychology
5,784
515 - Analysis
5,585
571 - Physiology & related subjects
5,380
001 - Knowledge
5,257
200 - Religion
5,216
306 - Culture & institutions
5,159
332 - Financial economics
5,139
540 - Chemistry & allied sciences
5,110
629 - Other branches of engineering
5,044
280 - Christian denominations & sects
4,613
250 - Christian orders & local church
4,459
745 - Decorative arts
4,451
more ...