Classification
330 - Economics
1,091
005 - Computer programming, programs & data
196
006 - Special computer methods
162
658 - General management
154
004 - Data processing & computer science
64
331 - Labor economics
46
620 - Engineering & allied operations
46
621 - Applied physics
40
338 - Production
38
500 - Natural sciences & mathematics
35
304 - Factors affecting social behavior
33
616 - Diseases
30
320 - Political science
28
000 - Computer science, information & general works
24
003 - Systems
23
374 - Adult education
23
381 - Commerce
23
570 - Life sciences; biology
22
302 - Social interaction
19
519 - Probabilities & applied mathematics
19
617 - Surgery & related medical specialties
19
300 - Social sciences
18
363 - Other social problems & services
18
745 - Decorative arts
18
001 - Knowledge
16
332 - Financial economics
15
530 - Physics
15
306 - Culture & institutions
14
327 - International relations
14
551 - Geology, hydrology & meteorology
14
629 - Other branches of engineering
14
510 - Mathematics
13
610 - Medicine & health
13
384 - Communications; telecommunication
12
333 - Economics of land & energy
11
515 - Analysis
11
670 - Manufacturing
11
040 - [Unassigned]
10
370 - Education
10
809 - History, description & criticism
10
910 - Geography & travel
10
380 - Commerce, communications & transportation
9
511 - General principles of mathematics
9
579 - Microorganisms, fungi & algae
9
660 - Chemical engineering
9
062 - Organizations in British Isles; in England
8
150 - Psychology
8
301 - Sociology & anthropology
8
305 - Social groups
8
340 - Law
8
more ...