Classification
330 - Economics
141,975
820 - English & Old English literatures
80,869
320 - Political science
79,601
600 - Technology
61,886
340 - Law
61,162
658 - General management
33,111
610 - Medicine & health
31,960
005 - Computer programming, programs & data
27,604
500 - Natural sciences & mathematics
25,948
620 - Engineering & allied operations
25,692
300 - Social sciences
25,657
900 - History & geography
23,256
621 - Applied physics
21,327
616 - Diseases
21,242
004 - Data processing & computer science
17,884
006 - Special computer methods
17,743
780 - Music
15,035
000 - Computer science, information & general works
14,461
333 - Economics of land & energy
13,422
650 - Management & auxiliary services
11,656
370 - Education
11,131
700 - The arts; fine & decorative arts
10,988
331 - Labor economics
9,390
530 - Physics
8,962
800 - Literature & rhetoric
8,928
338 - Production
8,657
363 - Other social problems & services
8,281
510 - Mathematics
7,582
380 - Commerce, communications & transportation
6,988
302 - Social interaction
6,393
304 - Factors affecting social behavior
6,255
519 - Probabilities & applied mathematics
6,231
570 - Life sciences; biology
6,215
230 - Christianity & Christian theology
6,183
630 - Agriculture & related technologies
6,053
617 - Surgery & related medical specialties
5,940
301 - Sociology & anthropology
5,726
515 - Analysis
5,507
100 - Philosophy & psychology
5,379
332 - Financial economics
5,114
306 - Culture & institutions
4,960
571 - Physiology & related subjects
4,957
540 - Chemistry & allied sciences
4,942
629 - Other branches of engineering
4,875
200 - Religion
4,811
280 - Christian denominations & sects
4,611
346 - Private law
4,564
250 - Christian orders & local church
4,459
520 - Astronomy & allied sciences
4,379
745 - Decorative arts
4,378
more ...