Classification
006 - Special computer methods
94
005 - Computer programming, programs & data
52
658 - General management
52
621 - Applied physics
48
616 - Diseases
38
620 - Engineering & allied operations
34
320 - Political science
29
629 - Other branches of engineering
24
306 - Culture & institutions
22
617 - Surgery & related medical specialties
21
304 - Factors affecting social behavior
20
004 - Data processing & computer science
16
330 - Economics
15
003 - Systems
14
327 - International relations
13
338 - Production
13
610 - Medicine & health
13
370 - Education
12
530 - Physics
11
551 - Geology, hydrology & meteorology
11
612 - Human physiology
11
809 - History, description & criticism
11
333 - Economics of land & energy
10
510 - Mathematics
10
515 - Analysis
10
150 - Psychology
9
519 - Probabilities & applied mathematics
9
340 - Law
8
660 - Chemical engineering
8
670 - Manufacturing
8
062 - Organizations in British Isles; in England
7
301 - Sociology & anthropology
7
571 - Physiology & related subjects
7
577 - Ecology
7
615 - Pharmacology & therapeutics
7
628 - Sanitary & municipal engineering
7
040 - [Unassigned]
6
305 - Social groups
6
363 - Other social problems & services
6
378 - Higher education
6
512 - Algebra
6
613 - Personal health & safety
6
618 - Gynecology, obstetrics, pediatrics & geriatrics
6
690 - Buildings
6
791 - Public performances
6
332 - Financial economics
5
341 - Law of nations
5
343 - Military, tax, trade & industrial law
5
371 - Schools & their activities; special education
5
570 - Life sciences; biology
5
more ...