Classification
650 - Management & auxiliary services
6,505
300 - Social sciences
6,179
620 - Engineering & allied operations
5,831
616 - Diseases
3,643
610 - Medicine & health
2,955
001 - Knowledge
2,841
658 - General management
2,575
621 - Applied physics
2,280
617 - Surgery & related medical specialties
1,253
320 - Political science
839
530 - Physics
837
540 - Chemistry & allied sciences
814
005 - Computer programming, programs & data
798
670 - Manufacturing
765
330 - Economics
761
004 - Data processing & computer science
753
510 - Mathematics
751
340 - Law
740
301 - Sociology & anthropology
724
570 - Life sciences; biology
704
615 - Pharmacology & therapeutics
643
629 - Other branches of engineering
537
150 - Psychology
505
519 - Probabilities & applied mathematics
490
624 - Civil engineering
469
618 - Gynecology, obstetrics, pediatrics & geriatrics
428
515 - Analysis
405
332 - Financial economics
391
900 - History & geography
383
657 - Accounting
355
333 - Economics of land & energy
345
338 - Production
335
006 - Special computer methods
334
306 - Culture & institutions
331
571 - Physiology & related subjects
297
003 - Systems
291
370 - Education
261
660 - Chemical engineering
258
550 - Earth sciences
247
344 - Labor, social, education & cultural law
243
512 - Algebra
241
302 - Social interaction
233
551 - Geology, hydrology & meteorology
231
500 - Natural sciences & mathematics
229
612 - Human physiology
223
363 - Other social problems & services
219
614 - Incidence & prevention of disease
219
543 - Analytical chemistry
210
541 - Physical chemistry
193
572 - Biochemistry
188
more ...