Classification
330 - Economics
142,212
820 - English & Old English literatures
80,869
320 - Political science
80,023
600 - Technology
62,178
340 - Law
61,357
658 - General management
32,956
610 - Medicine & health
32,318
005 - Computer programming, programs & data
27,674
300 - Social sciences
27,628
620 - Engineering & allied operations
25,984
500 - Natural sciences & mathematics
25,286
900 - History & geography
24,066
621 - Applied physics
21,365
616 - Diseases
21,216
006 - Special computer methods
18,096
004 - Data processing & computer science
17,862
780 - Music
15,082
000 - Computer science, information & general works
14,673
333 - Economics of land & energy
13,670
650 - Management & auxiliary services
11,634
700 - The arts; fine & decorative arts
11,563
370 - Education
11,413
331 - Labor economics
9,390
800 - Literature & rhetoric
9,184
530 - Physics
9,036
338 - Production
8,614
363 - Other social problems & services
8,505
510 - Mathematics
7,596
380 - Commerce, communications & transportation
7,100
302 - Social interaction
6,411
304 - Factors affecting social behavior
6,400
570 - Life sciences; biology
6,226
519 - Probabilities & applied mathematics
6,225
230 - Christianity & Christian theology
6,185
630 - Agriculture & related technologies
6,149
301 - Sociology & anthropology
5,958
617 - Surgery & related medical specialties
5,947
100 - Philosophy & psychology
5,835
515 - Analysis
5,516
200 - Religion
5,168
540 - Chemistry & allied sciences
5,136
332 - Financial economics
5,119
571 - Physiology & related subjects
5,087
306 - Culture & institutions
5,058
001 - Knowledge
4,918
629 - Other branches of engineering
4,884
280 - Christian denominations & sects
4,612
346 - Private law
4,566
250 - Christian orders & local church
4,459
520 - Astronomy & allied sciences
4,392
more ...