Classification
153 - Mental processes & intelligence
330 - Economics
380 - Commerce, communications & transportation
384 - Communications; telecommunication
3
500 - Natural sciences & mathematics
658 - General management
300 - Social sciences
2
302 - Social interaction
2
670 - Manufacturing
2
303 - Social processes
1
650 - Management & auxiliary services
1
808 - Rhetoric & collections of literature
1