Classification
004 - Data processing & computer science
4,062
330 - Economics
3,850
519 - Probabilities & applied mathematics
3,258
005 - Computer programming, programs & data
3,048
003 - Systems
2,232
006 - Special computer methods
2,209
320 - Political science
2,163
530 - Physics
2,070
515 - Analysis
1,857
658 - General management
1,852
512 - Algebra
1,747
629 - Other branches of engineering
1,594
300 - Social sciences
1,380
900 - History & geography
1,329
100 - Philosophy & psychology
1,182
621 - Applied physics
1,084
500 - Natural sciences & mathematics
1,076
620 - Engineering & allied operations
938
700 - The arts; fine & decorative arts
936
340 - Law
824
511 - General principles of mathematics
792
333 - Economics of land & energy
589
301 - Sociology & anthropology
587
370 - Education
558
600 - Technology
505
000 - Computer science, information & general works
490
510 - Mathematics
480
306 - Culture & institutions
474
120 - Epistemology, causation & humankind
372
518 - Numerical analysis
355
610 - Medicine & health
349
800 - Literature & rhetoric
342
140 - Specific philosophical schools
326
576 - Genetics & evolution
325
380 - Commerce, communications & transportation
313
516 - Geometry
286
338 - Production
271
327 - International relations
267
331 - Labor economics
265
363 - Other social problems & services
257
305 - Social groups
243
304 - Factors affecting social behavior
241
200 - Religion
228
170 - Ethics
225
539 - Modern physics
225
570 - Life sciences; biology
223
780 - Music
222
400 - Language
201
302 - Social interaction
195
514 - Topology
193
more ...