Classification
658 - General management
227
070 - News media, journalism & publishing
219
005 - Computer programming, programs & data
176
006 - Special computer methods
171
302 - Social interaction
134
004 - Data processing & computer science
117
306 - Culture & institutions
112
320 - Political science
99
304 - Factors affecting social behavior
98
519 - Probabilities & applied mathematics
97
616 - Diseases
84
620 - Engineering & allied operations
79
610 - Medicine & health
76
621 - Applied physics
67
003 - Systems
59
551 - Geology, hydrology & meteorology
56
330 - Economics
54
809 - History, description & criticism
53
300 - Social sciences
48
541 - Physical chemistry
47
370 - Education
46
338 - Production
44
547 - Organic chemistry
42
327 - International relations
37
510 - Mathematics
37
571 - Physiology & related subjects
37
305 - Social groups
32
333 - Economics of land & energy
32
617 - Surgery & related medical specialties
32
418 - Standard usage & applied linguistics
29
515 - Analysis
29
570 - Life sciences; biology
29
530 - Physics
27
615 - Pharmacology & therapeutics
26
629 - Other branches of engineering
26
301 - Sociology & anthropology
25
910 - Geography & travel
25
371 - Schools & their activities; special education
24
550 - Earth sciences
23
040 - [Unassigned]
22
363 - Other social problems & services
22
025 - Library operations
21
150 - Psychology
18
332 - Financial economics
18
543 - Analytical chemistry
18
580 - Plants (Botany)
17
659 - Advertising & public relations
17
664 - Food technology
17
303 - Social processes
16
518 - Numerical analysis
16
more ...