Classification
330 - Economics
1,641
338 - Production
726
333 - Economics of land & energy
416
658 - General management
382
332 - Financial economics
331
337 - International economics
283
519 - Probabilities & applied mathematics
272
336 - Public finance
244
339 - Macroeconomics & related topics
219
320 - Political science
159
304 - Factors affecting social behavior
124
650 - Management & auxiliary services
113
331 - Labor economics
106
621 - Applied physics
94
301 - Sociology & anthropology
57
363 - Other social problems & services
56
657 - Accounting
50
327 - International relations
48
630 - Agriculture & related technologies
47
300 - Social sciences
46
620 - Engineering & allied operations
45
577 - Ecology
44
910 - Geography & travel
42
306 - Culture & institutions
40
003 - Systems
36
005 - Computer programming, programs & data
36
004 - Data processing & computer science
33
343 - Military, tax, trade & industrial law
28
340 - Law
26
628 - Sanitary & municipal engineering
25
670 - Manufacturing
25
006 - Special computer methods
23
515 - Analysis
23
551 - Geology, hydrology & meteorology
21
900 - History & geography
21
629 - Other branches of engineering
19
511 - General principles of mathematics
17
530 - Physics
17
550 - Earth sciences
17
344 - Labor, social, education & cultural law
15
370 - Education
15
361 - Social problems & social welfare in general
14
501 - Philosophy & theory
14
624 - Civil engineering
14
303 - Social processes
13
553 - Economic geology
13
341 - Law of nations
12
170 - Ethics
11
371 - Schools & their activities; special education
11
614 - Incidence & prevention of disease
11
more ...