Classification
658 - General management
3,195
670 - Manufacturing
2,020
330 - Economics
1,729
302 - Social interaction
1,457
300 - Social sciences
1,443
500 - Natural sciences & mathematics
1,430
338 - Production
504
381 - Commerce
245
624 - Civil engineering
240
690 - Buildings
239
331 - Labor economics
227
650 - Management & auxiliary services
208
620 - Engineering & allied operations
182
629 - Other branches of engineering
172
158 - Applied psychology
141
384 - Communications; telecommunication
135
621 - Applied physics
125
153 - Mental processes & intelligence
114
000 - Computer science, information & general works
98
003 - Systems
96
380 - Commerce, communications & transportation
85
006 - Special computer methods
80
332 - Financial economics
78
333 - Economics of land & energy
71
005 - Computer programming, programs & data
55
001 - Knowledge
42
745 - Decorative arts
40
304 - Factors affecting social behavior
37
368 - Insurance
36
004 - Data processing & computer science
35
343 - Military, tax, trade & industrial law
23
519 - Probabilities & applied mathematics
23
174 - Occupational ethics
20
303 - Social processes
19
363 - Other social problems & services
19
170 - Ethics
18
510 - Mathematics
18
659 - Advertising & public relations
18
340 - Law
16
352 - General considerations of public administration
14
691 - Building materials
14
374 - Adult education
12
150 - Psychology
11
660 - Chemical engineering
11
700 - The arts; fine & decorative arts
11
370 - Education
10
600 - Technology
10
720 - Architecture
10
346 - Private law
9
515 - Analysis
8
more ...