Classification
658 - General management
330 - Economics
12
331 - Labor economics
8
500 - Natural sciences & mathematics
5
650 - Management & auxiliary services
5
302 - Social interaction
4
338 - Production
4
339 - Macroeconomics & related topics
3
000 - Computer science, information & general works
2
006 - Special computer methods
2
300 - Social sciences
2
332 - Financial economics
2
131 - Parapsychological & occult methods
1
303 - Social processes
1
366 - Associations
1
381 - Commerce
1
384 - Communications; telecommunication
1
600 - Technology
1
670 - Manufacturing
1