Classification
519 - Probabilities & applied mathematics
1,079
515 - Analysis
335
620 - Engineering & allied operations
161
530 - Physics
157
003 - Systems
128
621 - Applied physics
83
004 - Data processing & computer science
80
518 - Numerical analysis
80
510 - Mathematics
64
512 - Algebra
62
006 - Special computer methods
59
005 - Computer programming, programs & data
57
516 - Geometry
46
531 - Classical mechanics; solid mechanics
40
511 - General principles of mathematics
39
629 - Other branches of engineering
39
570 - Life sciences; biology
35
330 - Economics
26
658 - General management
25
550 - Earth sciences
15
500 - Natural sciences & mathematics
9
514 - Topology
9
541 - Physical chemistry
9
332 - Financial economics
8
001 - Knowledge
7
040 - [Unassigned]
7
537 - Electricity & electronics
7
610 - Medicine & health
7
551 - Geology, hydrology & meteorology
6
910 - Geography & travel
6
571 - Physiology & related subjects
5
333 - Economics of land & energy
4
520 - Astronomy & allied sciences
4
539 - Modern physics
4
614 - Incidence & prevention of disease
4
616 - Diseases
4
300 - Social sciences
3
336 - Public finance
3
338 - Production
3
523 - Specific celestial bodies & phenomena
3
526 - Mathematical geography
3
535 - Light & infrared & ultraviolet phenomena
3
780 - Music
3
150 - Psychology
2
301 - Sociology & anthropology
2
339 - Macroeconomics & related topics
2
368 - Insurance
2
501 - Philosophy & theory
2
534 - Sound & related vibrations
2
572 - Biochemistry
2
more ...