Classification
330 - Economics
500 - Natural sciences & mathematics
658 - General management
93
300 - Social sciences
79
302 - Social interaction
79
670 - Manufacturing
79
338 - Production
22
381 - Commerce
14
331 - Labor economics
12
158 - Applied psychology
8
620 - Engineering & allied operations
7
650 - Management & auxiliary services
7
333 - Economics of land & energy
5
600 - Technology
5
153 - Mental processes & intelligence
4
332 - Financial economics
4
700 - The arts; fine & decorative arts
4
000 - Computer science, information & general works
3
004 - Data processing & computer science
3
320 - Political science
3
363 - Other social problems & services
3
510 - Mathematics
3
576 - Genetics & evolution
3
339 - Macroeconomics & related topics
2
380 - Commerce, communications & transportation
2
384 - Communications; telecommunication
2
414 - Phonology & phonetics
2
659 - Advertising & public relations
2
720 - Architecture
2
800 - Literature & rhetoric
2
005 - Computer programming, programs & data
1
006 - Special computer methods
1
100 - Philosophy & psychology
1
150 - Psychology
1
170 - Ethics
1
303 - Social processes
1
304 - Factors affecting social behavior
1
307 - Communities
1
368 - Insurance
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
745 - Decorative arts
1
900 - History & geography
1
973 - United States
1