Classification
658 - General management
2,790
338 - Production
1,487
330 - Economics
1,471
300 - Social sciences
501
302 - Social interaction
454
620 - Engineering & allied operations
341
333 - Economics of land & energy
308
600 - Technology
293
000 - Computer science, information & general works
289
650 - Management & auxiliary services
234
320 - Political science
227
500 - Natural sciences & mathematics
217
670 - Manufacturing
209
700 - The arts; fine & decorative arts
197
610 - Medicine & health
178
363 - Other social problems & services
166
621 - Applied physics
161
331 - Labor economics
151
153 - Mental processes & intelligence
149
004 - Data processing & computer science
146
332 - Financial economics
138
384 - Communications; telecommunication
133
370 - Education
125
380 - Commerce, communications & transportation
118
900 - History & geography
116
005 - Computer programming, programs & data
102
381 - Commerce
102
303 - Social processes
97
006 - Special computer methods
86
140 - Specific philosophical schools
84
158 - Applied psychology
79
630 - Agriculture & related technologies
77
629 - Other branches of engineering
72
304 - Factors affecting social behavior
53
540 - Chemistry & allied sciences
51
551 - Geology, hydrology & meteorology
46
160 - Logic
43
547 - Organic chemistry
41
660 - Chemical engineering
41
657 - Accounting
39
580 - Plants (Botany)
38
340 - Law
36
745 - Decorative arts
35
100 - Philosophy & psychology
34
001 - Knowledge
33
720 - Architecture
31
576 - Genetics & evolution
30
628 - Sanitary & municipal engineering
29
668 - Technology of other organic products
29
615 - Pharmacology & therapeutics
28
more ...