Classification
380 - Commerce, communications & transportation
330 - Economics
68
363 - Other social problems & services
41
333 - Economics of land & energy
40
384 - Communications; telecommunication
24
658 - General management
24
302 - Social interaction
22
320 - Political science
22
670 - Manufacturing
19
630 - Agriculture & related technologies
17
304 - Factors affecting social behavior
13
610 - Medicine & health
12
000 - Computer science, information & general works
11
600 - Technology
8
336 - Public finance
6
370 - Education
2
004 - Data processing & computer science
1
300 - Social sciences
1
331 - Labor economics
1
338 - Production
1
340 - Law
1
381 - Commerce
1
808 - Rhetoric & collections of literature
1
900 - History & geography
1