Classification
600 - Technology
12,612
330 - Economics
8,990
658 - General management
6,080
320 - Political science
3,796
670 - Manufacturing
3,056
300 - Social sciences
2,026
338 - Production
1,913
620 - Engineering & allied operations
1,879
500 - Natural sciences & mathematics
1,705
302 - Social interaction
1,642
333 - Economics of land & energy
1,166
660 - Chemical engineering
960
700 - The arts; fine & decorative arts
907
158 - Applied psychology
865
621 - Applied physics
815
340 - Law
782
363 - Other social problems & services
741
000 - Computer science, information & general works
738
900 - History & geography
616
331 - Labor economics
615
332 - Financial economics
615
380 - Commerce, communications & transportation
593
003 - Systems
549
629 - Other branches of engineering
498
610 - Medicine & health
466
381 - Commerce
456
630 - Agriculture & related technologies
435
650 - Management & auxiliary services
365
004 - Data processing & computer science
292
624 - Civil engineering
288
006 - Special computer methods
276
690 - Buildings
272
306 - Culture & institutions
266
519 - Probabilities & applied mathematics
257
745 - Decorative arts
254
384 - Communications; telecommunication
243
005 - Computer programming, programs & data
235
370 - Education
235
304 - Factors affecting social behavior
219
540 - Chemistry & allied sciences
200
541 - Physical chemistry
187
150 - Psychology
185
140 - Specific philosophical schools
181
580 - Plants (Botany)
165
547 - Organic chemistry
151
576 - Genetics & evolution
151
153 - Mental processes & intelligence
148
579 - Microorganisms, fungi & algae
147
616 - Diseases
146
374 - Adult education
130
more ...