Classification
330 - Economics
111
320 - Political science
87
658 - General management
76
370 - Education
51
306 - Culture & institutions
45
301 - Sociology & anthropology
40
519 - Probabilities & applied mathematics
39
300 - Social sciences
37
332 - Financial economics
31
338 - Production
31
621 - Applied physics
31
510 - Mathematics
27
327 - International relations
25
331 - Labor economics
24
302 - Social interaction
21
304 - Factors affecting social behavior
21
870 - Italic literatures; Latin literature
21
005 - Computer programming, programs & data
20
340 - Law
20
900 - History & geography
19
004 - Data processing & computer science
18
616 - Diseases
18
364 - Criminology
17
612 - Human physiology
17
006 - Special computer methods
16
333 - Economics of land & energy
16
380 - Commerce, communications & transportation
16
610 - Medicine & health
16
305 - Social groups
15
620 - Engineering & allied operations
14
700 - The arts; fine & decorative arts
14
410 - Linguistics
13
530 - Physics
13
809 - History, description & criticism
13
363 - Other social problems & services
12
100 - Philosophy & psychology
11
150 - Psychology
11
200 - Religion
11
617 - Surgery & related medical specialties
11
641 - Food & drink
11
664 - Food technology
11
003 - Systems
9
361 - Social problems & social welfare in general
9
378 - Higher education
9
418 - Standard usage & applied linguistics
9
551 - Geology, hydrology & meteorology
9
800 - Literature & rhetoric
9
500 - Natural sciences & mathematics
8
000 - Computer science, information & general works
7
155 - Differential & developmental psychology
7
more ...