Classification
330 - Economics
29
658 - General management
29
384 - Communications; telecommunication
18
380 - Commerce, communications & transportation
17
381 - Commerce
13
000 - Computer science, information & general works
8
300 - Social sciences
7
302 - Social interaction
7
500 - Natural sciences & mathematics
7
670 - Manufacturing
7
808 - Rhetoric & collections of literature
7
651 - Office services
6
011 - Bibliographies
1