Classification
330 - Economics
9,295
005 - Computer programming, programs & data
8,207
004 - Data processing & computer science
3,400
331 - Labor economics
2,739
006 - Special computer methods
2,617
658 - General management
2,390
621 - Applied physics
1,846
600 - Technology
1,829
320 - Political science
1,428
500 - Natural sciences & mathematics
1,419
000 - Computer science, information & general works
1,378
620 - Engineering & allied operations
1,244
333 - Economics of land & energy
1,177
332 - Financial economics
1,075
374 - Adult education
786
338 - Production
757
363 - Other social problems & services
657
384 - Communications; telecommunication
642
340 - Law
638
610 - Medicine & health
614
327 - International relations
520
300 - Social sciences
467
630 - Agriculture & related technologies
432
364 - Criminology
420
003 - Systems
408
304 - Factors affecting social behavior
391
900 - History & geography
359
700 - The arts; fine & decorative arts
331
040 - [Unassigned]
320
745 - Decorative arts
318
820 - English & Old English literatures
300
380 - Commerce, communications & transportation
297
381 - Commerce
272
302 - Social interaction
251
551 - Geology, hydrology & meteorology
250
629 - Other branches of engineering
230
355 - Military science
216
670 - Manufacturing
213
341 - Law of nations
196
580 - Plants (Botany)
171
650 - Management & auxiliary services
171
370 - Education
151
140 - Specific philosophical schools
148
519 - Probabilities & applied mathematics
142
368 - Insurance
137
303 - Social processes
127
306 - Culture & institutions
113
530 - Physics
107
339 - Macroeconomics & related topics
99
343 - Military, tax, trade & industrial law
99
more ...