Classification
330 - Economics
46
338 - Production
32
302 - Social interaction
30
361 - Social problems & social welfare in general
20
304 - Factors affecting social behavior
9
320 - Political science
8
306 - Culture & institutions
6
331 - Labor economics
5
370 - Education
5
658 - General management
5
305 - Social groups
4
333 - Economics of land & energy
4
336 - Public finance
4
174 - Occupational ethics
3
307 - Communities
3
337 - International economics
3
339 - Macroeconomics & related topics
3
519 - Probabilities & applied mathematics
3
301 - Sociology & anthropology
2
610 - Medicine & health
2
621 - Applied physics
2
006 - Special computer methods
1
323 - Civil & political rights
1
327 - International relations
1
332 - Financial economics
1
340 - Law
1
343 - Military, tax, trade & industrial law
1
363 - Other social problems & services
1
364 - Criminology
1
368 - Insurance
1
371 - Schools & their activities; special education
1
378 - Higher education
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
571 - Physiology & related subjects
1
577 - Ecology
1
613 - Personal health & safety
1
614 - Incidence & prevention of disease
1
657 - Accounting
1