Classification
658 - General management
1,309
519 - Probabilities & applied mathematics
349
330 - Economics
261
003 - Systems
260
006 - Special computer methods
184
515 - Analysis
88
620 - Engineering & allied operations
86
004 - Data processing & computer science
82
670 - Manufacturing
74
621 - Applied physics
67
005 - Computer programming, programs & data
65
511 - General principles of mathematics
61
333 - Economics of land & energy
45
332 - Financial economics
43
500 - Natural sciences & mathematics
43
338 - Production
36
650 - Management & auxiliary services
33
518 - Numerical analysis
29
629 - Other branches of engineering
25
300 - Social sciences
20
510 - Mathematics
17
530 - Physics
17
320 - Political science
12
170 - Ethics
10
000 - Computer science, information & general works
9
610 - Medicine & health
9
657 - Accounting
9
301 - Sociology & anthropology
8
336 - Public finance
8
577 - Ecology
8
700 - The arts; fine & decorative arts
8
745 - Decorative arts
8
339 - Macroeconomics & related topics
7
512 - Algebra
7
634 - Orchards, fruits & forestry
7
153 - Mental processes & intelligence
6
302 - Social interaction
6
304 - Factors affecting social behavior
6
331 - Labor economics
6
381 - Commerce
6
306 - Culture & institutions
5
340 - Law
5
362 - Social welfare problems & services
5
363 - Other social problems & services
5
384 - Communications; telecommunication
5
551 - Geology, hydrology & meteorology
5
600 - Technology
5
001 - Knowledge
4
303 - Social processes
4
660 - Chemical engineering
4
more ...