Classification
330 - Economics
20
658 - General management
18
300 - Social sciences
11
302 - Social interaction
10
500 - Natural sciences & mathematics
9
670 - Manufacturing
9
331 - Labor economics
5
001 - Knowledge
3
338 - Production
2
384 - Communications; telecommunication
2
000 - Computer science, information & general works
1
011 - Bibliographies
1
381 - Commerce
1