Classification
330 - Economics
380
519 - Probabilities & applied mathematics
205
338 - Production
107
339 - Macroeconomics & related topics
52
332 - Financial economics
47
658 - General management
37
320 - Political science
23
500 - Natural sciences & mathematics
18
510 - Mathematics
16
300 - Social sciences
15
336 - Public finance
14
337 - International economics
12
650 - Management & auxiliary services
11
331 - Labor economics
9
333 - Economics of land & energy
7
511 - General principles of mathematics
7
327 - International relations
6
530 - Physics
6
100 - Philosophy & psychology
5
302 - Social interaction
5
515 - Analysis
5
621 - Applied physics
5
003 - Systems
4
170 - Ethics
4
657 - Accounting
4
000 - Computer science, information & general works
3
005 - Computer programming, programs & data
3
006 - Special computer methods
3
512 - Algebra
3
004 - Data processing & computer science
2
306 - Culture & institutions
2
025 - Library operations
1
149 - Other philosophical systems
1
158 - Applied psychology
1
174 - Occupational ethics
1
190 - Modern western philosophy
1
305 - Social groups
1
341 - Law of nations
1
342 - Constitutional & administrative law
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
364 - Criminology
1
368 - Insurance
1
370 - Education
1
374 - Adult education
1
381 - Commerce
1
410 - Linguistics
1
501 - Philosophy & theory
1
509 - Historical, geographic & persons treatment
1
514 - Topology
1
more ...