Classification
658 - General management
2,026
338 - Production
1,363
330 - Economics
1,219
300 - Social sciences
459
302 - Social interaction
442
620 - Engineering & allied operations
321
333 - Economics of land & energy
276
600 - Technology
276
000 - Computer science, information & general works
272
500 - Natural sciences & mathematics
213
700 - The arts; fine & decorative arts
189
650 - Management & auxiliary services
188
670 - Manufacturing
186
320 - Political science
181
610 - Medicine & health
167
363 - Other social problems & services
162
331 - Labor economics
152
153 - Mental processes & intelligence
142
621 - Applied physics
137
384 - Communications; telecommunication
136
332 - Financial economics
126
004 - Data processing & computer science
114
380 - Commerce, communications & transportation
108
900 - History & geography
102
381 - Commerce
99
370 - Education
97
303 - Social processes
95
005 - Computer programming, programs & data
85
140 - Specific philosophical schools
81
006 - Special computer methods
77
158 - Applied psychology
77
630 - Agriculture & related technologies
69
629 - Other branches of engineering
67
540 - Chemistry & allied sciences
51
304 - Factors affecting social behavior
49
551 - Geology, hydrology & meteorology
44
547 - Organic chemistry
41
660 - Chemical engineering
39
580 - Plants (Botany)
38
745 - Decorative arts
34
001 - Knowledge
32
576 - Genetics & evolution
30
100 - Philosophy & psychology
29
340 - Law
29
615 - Pharmacology & therapeutics
29
668 - Technology of other organic products
29
720 - Architecture
28
628 - Sanitary & municipal engineering
27
657 - Accounting
25
160 - Logic
23
more ...