Classification
006 - Special computer methods
101
658 - General management
94
621 - Applied physics
67
005 - Computer programming, programs & data
60
620 - Engineering & allied operations
58
616 - Diseases
56
004 - Data processing & computer science
39
320 - Political science
32
610 - Medicine & health
25
629 - Other branches of engineering
25
333 - Economics of land & energy
22
304 - Factors affecting social behavior
20
338 - Production
19
327 - International relations
18
617 - Surgery & related medical specialties
17
330 - Economics
16
530 - Physics
16
306 - Culture & institutions
15
370 - Education
15
515 - Analysis
15
519 - Probabilities & applied mathematics
15
624 - Civil engineering
15
363 - Other social problems & services
14
303 - Social processes
11
332 - Financial economics
10
551 - Geology, hydrology & meteorology
10
571 - Physiology & related subjects
10
690 - Buildings
10
340 - Law
9
362 - Social welfare problems & services
9
418 - Standard usage & applied linguistics
9
612 - Human physiology
9
664 - Food technology
9
809 - History, description & criticism
9
003 - Systems
8
302 - Social interaction
8
305 - Social groups
8
343 - Military, tax, trade & industrial law
8
378 - Higher education
8
510 - Mathematics
8
615 - Pharmacology & therapeutics
8
628 - Sanitary & municipal engineering
8
630 - Agriculture & related technologies
8
660 - Chemical engineering
8
301 - Sociology & anthropology
7
541 - Physical chemistry
7
570 - Life sciences; biology
7
618 - Gynecology, obstetrics, pediatrics & geriatrics
7
910 - Geography & travel
7
300 - Social sciences
6
more ...