Classification
620 - Engineering & allied operations
263
629 - Other branches of engineering
102
745 - Decorative arts
48
500 - Natural sciences & mathematics
32
331 - Labor economics
22
658 - General management
18
790 - Recreational & performing arts
17
510 - Mathematics
13
384 - Communications; telecommunication
10
338 - Production
9
330 - Economics
8
621 - Applied physics
6
670 - Manufacturing
6
302 - Social interaction
5
005 - Computer programming, programs & data
4
300 - Social sciences
4
781 - General principles & musical forms
4
153 - Mental processes & intelligence
3
808 - Rhetoric & collections of literature
3
001 - Knowledge
2
380 - Commerce, communications & transportation
2
519 - Probabilities & applied mathematics
2
625 - Engineering of railroads & roads
2
800 - Literature & rhetoric
2
004 - Data processing & computer science
1
158 - Applied psychology
1
303 - Social processes
1
304 - Factors affecting social behavior
1
307 - Communities
1
332 - Financial economics
1
333 - Economics of land & energy
1
339 - Macroeconomics & related topics
1
343 - Military, tax, trade & industrial law
1
361 - Social problems & social welfare in general
1
364 - Criminology
1
381 - Commerce
1
600 - Technology
1
608 - Inventions & patents
1
624 - Civil engineering
1
628 - Sanitary & municipal engineering
1
650 - Management & auxiliary services
1
741 - Drawing & drawings
1