Classification
658 - General management
2,782
338 - Production
1,475
330 - Economics
1,452
300 - Social sciences
496
302 - Social interaction
454
620 - Engineering & allied operations
335
333 - Economics of land & energy
292
000 - Computer science, information & general works
286
600 - Technology
281
650 - Management & auxiliary services
234
500 - Natural sciences & mathematics
215
320 - Political science
214
670 - Manufacturing
208
700 - The arts; fine & decorative arts
186
610 - Medicine & health
174
363 - Other social problems & services
160
621 - Applied physics
160
331 - Labor economics
151
153 - Mental processes & intelligence
149
004 - Data processing & computer science
145
332 - Financial economics
138
384 - Communications; telecommunication
133
370 - Education
114
380 - Commerce, communications & transportation
112
005 - Computer programming, programs & data
102
381 - Commerce
102
900 - History & geography
98
303 - Social processes
97
140 - Specific philosophical schools
89
158 - Applied psychology
79
630 - Agriculture & related technologies
73
629 - Other branches of engineering
72
006 - Special computer methods
69
540 - Chemistry & allied sciences
50
304 - Factors affecting social behavior
48
551 - Geology, hydrology & meteorology
46
160 - Logic
42
547 - Organic chemistry
41
660 - Chemical engineering
41
657 - Accounting
39
580 - Plants (Botany)
38
745 - Decorative arts
35
001 - Knowledge
33
340 - Law
33
100 - Philosophy & psychology
31
720 - Architecture
31
576 - Genetics & evolution
30
628 - Sanitary & municipal engineering
29
668 - Technology of other organic products
29
615 - Pharmacology & therapeutics
28
more ...