Classification
330 - Economics
142,080
820 - English & Old English literatures
80,870
320 - Political science
79,988
600 - Technology
63,475
340 - Law
61,369
658 - General management
32,717
610 - Medicine & health
32,203
005 - Computer programming, programs & data
28,225
300 - Social sciences
27,818
500 - Natural sciences & mathematics
25,280
620 - Engineering & allied operations
25,248
900 - History & geography
23,776
006 - Special computer methods
22,667
621 - Applied physics
19,861
616 - Diseases
19,579
004 - Data processing & computer science
15,327
780 - Music
15,076
000 - Computer science, information & general works
14,576
333 - Economics of land & energy
13,608
650 - Management & auxiliary services
11,637
370 - Education
11,479
700 - The arts; fine & decorative arts
11,470
331 - Labor economics
9,481
530 - Physics
8,989
800 - Literature & rhetoric
8,981
338 - Production
8,570
363 - Other social problems & services
8,395
510 - Mathematics
7,614
380 - Commerce, communications & transportation
7,095
304 - Factors affecting social behavior
6,467
302 - Social interaction
6,426
519 - Probabilities & applied mathematics
6,196
230 - Christianity & Christian theology
6,184
630 - Agriculture & related technologies
6,150
570 - Life sciences; biology
6,108
301 - Sociology & anthropology
5,979
617 - Surgery & related medical specialties
5,774
100 - Philosophy & psychology
5,744
515 - Analysis
5,471
001 - Knowledge
5,275
200 - Religion
5,203
571 - Physiology & related subjects
5,198
332 - Financial economics
5,136
540 - Chemistry & allied sciences
5,106
306 - Culture & institutions
5,039
280 - Christian denominations & sects
4,612
346 - Private law
4,571
250 - Christian orders & local church
4,459
629 - Other branches of engineering
4,438
745 - Decorative arts
4,398
more ...