Classification
658 - General management
760
005 - Computer programming, programs & data
29
670 - Manufacturing
24
650 - Management & auxiliary services
23
004 - Data processing & computer science
20
710 - Civic & landscape art
20
659 - Advertising & public relations
15
338 - Production
13
336 - Public finance
11
330 - Economics
9
333 - Economics of land & energy
9
363 - Other social problems & services
9
620 - Engineering & allied operations
8
628 - Sanitary & municipal engineering
8
006 - Special computer methods
6
332 - Financial economics
6
621 - Applied physics
6
624 - Civil engineering
6
641 - Food & drink
5
657 - Accounting
5
664 - Food technology
5
519 - Probabilities & applied mathematics
4
577 - Ecology
4
003 - Systems
3
025 - Library operations
3
302 - Social interaction
3
307 - Communities
3
337 - International economics
3
551 - Geology, hydrology & meteorology
3
910 - Geography & travel
3
150 - Psychology
2
303 - Social processes
2
320 - Political science
2
331 - Labor economics
2
339 - Macroeconomics & related topics
2
362 - Social welfare problems & services
2
381 - Commerce
2
616 - Diseases
2
629 - Other branches of engineering
2
660 - Chemical engineering
2
120 - Epistemology, causation & humankind
1
155 - Differential & developmental psychology
1
158 - Applied psychology
1
174 - Occupational ethics
1
300 - Social sciences
1
306 - Culture & institutions
1
327 - International relations
1
340 - Law
1
342 - Constitutional & administrative law
1
343 - Military, tax, trade & industrial law
1
more ...