Classification
658 - General management
97
320 - Political science
76
621 - Applied physics
56
330 - Economics
55
300 - Social sciences
49
004 - Data processing & computer science
39
340 - Law
37
620 - Engineering & allied operations
36
900 - History & geography
35
629 - Other branches of engineering
33
616 - Diseases
27
820 - English & Old English literatures
25
005 - Computer programming, programs & data
22
624 - Civil engineering
22
610 - Medicine & health
21
306 - Culture & institutions
19
370 - Education
19
690 - Buildings
19
006 - Special computer methods
18
530 - Physics
18
333 - Economics of land & energy
17
670 - Manufacturing
17
700 - The arts; fine & decorative arts
15
346 - Private law
14
519 - Probabilities & applied mathematics
13
170 - Ethics
12
301 - Sociology & anthropology
12
617 - Surgery & related medical specialties
12
003 - Systems
11
410 - Linguistics
11
510 - Mathematics
10
650 - Management & auxiliary services
10
830 - Literatures of Germanic languages
9
338 - Production
8
720 - Architecture
8
800 - Literature & rhetoric
8
020 - Library & information sciences
6
343 - Military, tax, trade & industrial law
6
390 - Customs, etiquette & folklore
6
516 - Geometry
6
660 - Chemical engineering
6
780 - Music
6
791 - Public performances
6
150 - Psychology
5
302 - Social interaction
5
304 - Factors affecting social behavior
5
305 - Social groups
5
363 - Other social problems & services
5
400 - Language
5
500 - Natural sciences & mathematics
5
more ...