Classification
338 - Production
658 - General management
330 - Economics
512
670 - Manufacturing
379
300 - Social sciences
350
302 - Social interaction
300
500 - Natural sciences & mathematics
288
331 - Labor economics
97
332 - Financial economics
77
381 - Commerce
76
650 - Management & auxiliary services
53
620 - Engineering & allied operations
45
158 - Applied psychology
43
384 - Communications; telecommunication
26
000 - Computer science, information & general works
25
153 - Mental processes & intelligence
24
001 - Knowledge
22
304 - Factors affecting social behavior
12
368 - Insurance
12
745 - Decorative arts
12
006 - Special computer methods
11
004 - Data processing & computer science
10
380 - Commerce, communications & transportation
9
629 - Other branches of engineering
8
005 - Computer programming, programs & data
6
600 - Technology
6
303 - Social processes
5
621 - Applied physics
5
659 - Advertising & public relations
4
800 - Literature & rhetoric
4
011 - Bibliographies
3
170 - Ethics
3
362 - Social welfare problems & services
2
657 - Accounting
2
664 - Food technology
2
677 - Textiles
2
150 - Psychology
1
152 - Perception, movement, emotions & drives
1
306 - Culture & institutions
1
307 - Communities
1
334 - Cooperatives
1
337 - International economics
1
339 - Macroeconomics & related topics
1
346 - Private law
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
364 - Criminology
1
372 - Elementary education
1
374 - Adult education
1
378 - Higher education
1
more ...