Classification
658 - General management
91
153 - Mental processes & intelligence
87
330 - Economics
86
300 - Social sciences
17
650 - Management & auxiliary services
16
302 - Social interaction
15
331 - Labor economics
14
158 - Applied psychology
13
338 - Production
11
500 - Natural sciences & mathematics
9
670 - Manufacturing
9
332 - Financial economics
5
150 - Psychology
3
381 - Commerce
3
384 - Communications; telecommunication
3
001 - Knowledge
2
303 - Social processes
2
380 - Commerce, communications & transportation
2
519 - Probabilities & applied mathematics
2
620 - Engineering & allied operations
2
808 - Rhetoric & collections of literature
2
000 - Computer science, information & general works
1
003 - Systems
1
005 - Computer programming, programs & data
1
305 - Social groups
1
333 - Economics of land & energy
1
352 - General considerations of public administration
1
355 - Military science
1
362 - Social welfare problems & services
1
370 - Education
1
395 - Etiquette (Manners)
1
651 - Office services
1
800 - Literature & rhetoric
1