Classification
004 - Data processing & computer science
4,019
519 - Probabilities & applied mathematics
3,241
005 - Computer programming, programs & data
2,967
330 - Economics
2,323
003 - Systems
2,170
006 - Special computer methods
2,169
320 - Political science
2,055
530 - Physics
2,012
515 - Analysis
1,835
658 - General management
1,819
512 - Algebra
1,742
629 - Other branches of engineering
1,569
300 - Social sciences
1,215
900 - History & geography
1,142
621 - Applied physics
1,072
100 - Philosophy & psychology
1,057
500 - Natural sciences & mathematics
1,053
620 - Engineering & allied operations
902
700 - The arts; fine & decorative arts
832
511 - General principles of mathematics
784
340 - Law
782
333 - Economics of land & energy
561
370 - Education
526
301 - Sociology & anthropology
501
510 - Mathematics
479
600 - Technology
478
000 - Computer science, information & general works
463
306 - Culture & institutions
461
610 - Medicine & health
358
518 - Numerical analysis
357
120 - Epistemology, causation & humankind
328
140 - Specific philosophical schools
315
800 - Literature & rhetoric
302
380 - Commerce, communications & transportation
294
338 - Production
288
516 - Geometry
281
576 - Genetics & evolution
277
331 - Labor economics
262
539 - Modern physics
251
363 - Other social problems & services
243
327 - International relations
236
304 - Factors affecting social behavior
228
305 - Social groups
225
570 - Life sciences; biology
213
170 - Ethics
202
780 - Music
201
791 - Public performances
200
514 - Topology
193
302 - Social interaction
186
400 - Language
170
more ...