Classification
650 - Management & auxiliary services
111
658 - General management
68
300 - Social sciences
50
001 - Knowledge
41
620 - Engineering & allied operations
27
330 - Economics
24
332 - Financial economics
10
340 - Law
10
610 - Medicine & health
10
657 - Accounting
10
338 - Production
8
333 - Economics of land & energy
7
550 - Earth sciences
7
616 - Diseases
7
336 - Public finance
6
339 - Macroeconomics & related topics
5
519 - Probabilities & applied mathematics
5
530 - Physics
5
570 - Life sciences; biology
5
621 - Applied physics
5
320 - Political science
4
337 - International economics
4
510 - Mathematics
4
004 - Data processing & computer science
3
303 - Social processes
3
343 - Military, tax, trade & industrial law
3
344 - Labor, social, education & cultural law
3
363 - Other social problems & services
3
500 - Natural sciences & mathematics
3
520 - Astronomy & allied sciences
3
540 - Chemistry & allied sciences
3
571 - Physiology & related subjects
3
301 - Sociology & anthropology
2
370 - Education
2
515 - Analysis
2
516 - Geometry
2
523 - Specific celestial bodies & phenomena
2
541 - Physical chemistry
2
547 - Organic chemistry
2
572 - Biochemistry
2
615 - Pharmacology & therapeutics
2
158 - Applied psychology
1
174 - Occupational ethics
1
180 - Ancient, medieval & eastern philosophy
1
302 - Social interaction
1
327 - International relations
1
331 - Labor economics
1
346 - Private law
1
347 - Civil procedure & courts
1
351 - Public administration
1
more ...