Classification
330 - Economics
17,232
600 - Technology
12,620
658 - General management
6,299
320 - Political science
3,804
670 - Manufacturing
3,090
300 - Social sciences
2,024
338 - Production
1,935
620 - Engineering & allied operations
1,908
500 - Natural sciences & mathematics
1,701
302 - Social interaction
1,636
333 - Economics of land & energy
1,168
660 - Chemical engineering
965
700 - The arts; fine & decorative arts
908
158 - Applied psychology
893
621 - Applied physics
831
340 - Law
786
363 - Other social problems & services
740
000 - Computer science, information & general works
737
332 - Financial economics
639
331 - Labor economics
631
900 - History & geography
621
380 - Commerce, communications & transportation
593
003 - Systems
557
629 - Other branches of engineering
513
610 - Medicine & health
466
381 - Commerce
465
630 - Agriculture & related technologies
435
650 - Management & auxiliary services
364
004 - Data processing & computer science
296
690 - Buildings
295
006 - Special computer methods
279
624 - Civil engineering
278
306 - Culture & institutions
270
519 - Probabilities & applied mathematics
261
745 - Decorative arts
257
384 - Communications; telecommunication
243
005 - Computer programming, programs & data
240
370 - Education
236
304 - Factors affecting social behavior
225
540 - Chemistry & allied sciences
200
150 - Psychology
193
541 - Physical chemistry
189
140 - Specific philosophical schools
181
580 - Plants (Botany)
165
153 - Mental processes & intelligence
152
547 - Organic chemistry
152
576 - Genetics & evolution
151
579 - Microorganisms, fungi & algae
149
374 - Adult education
132
515 - Analysis
131
more ...