Classification
658 - General management
16
330 - Economics
14
331 - Labor economics
10
500 - Natural sciences & mathematics
6
302 - Social interaction
5
338 - Production
5
650 - Management & auxiliary services
5
006 - Special computer methods
3
339 - Macroeconomics & related topics
3
000 - Computer science, information & general works
2
300 - Social sciences
2
332 - Financial economics
2
600 - Technology
2
131 - Parapsychological & occult methods
1
303 - Social processes
1
366 - Associations
1
381 - Commerce
1
384 - Communications; telecommunication
1
670 - Manufacturing
1