Classification
330 - Economics
18,393
658 - General management
14,018
005 - Computer programming, programs & data
4,938
300 - Social sciences
2,600
500 - Natural sciences & mathematics
2,358
333 - Economics of land & energy
2,232
302 - Social interaction
2,106
670 - Manufacturing
2,088
006 - Special computer methods
2,071
338 - Production
2,054
331 - Labor economics
2,015
000 - Computer science, information & general works
1,736
004 - Data processing & computer science
1,582
620 - Engineering & allied operations
1,472
650 - Management & auxiliary services
1,236
363 - Other social problems & services
1,214
381 - Commerce
856
332 - Financial economics
790
621 - Applied physics
790
610 - Medicine & health
783
600 - Technology
778
384 - Communications; telecommunication
777
700 - The arts; fine & decorative arts
758
003 - Systems
724
380 - Commerce, communications & transportation
689
320 - Political science
657
519 - Probabilities & applied mathematics
547
551 - Geology, hydrology & meteorology
537
900 - History & geography
485
158 - Applied psychology
478
304 - Factors affecting social behavior
449
577 - Ecology
438
153 - Mental processes & intelligence
393
368 - Insurance
363
745 - Decorative arts
323
370 - Education
321
628 - Sanitary & municipal engineering
302
630 - Agriculture & related technologies
288
025 - Library operations
280
374 - Adult education
262
140 - Specific philosophical schools
257
580 - Plants (Botany)
236
001 - Knowledge
191
340 - Law
181
170 - Ethics
174
371 - Schools & their activities; special education
165
629 - Other branches of engineering
153
690 - Buildings
151
720 - Architecture
149
303 - Social processes
148
more ...