Classification
620 - Engineering & allied operations
864
519 - Probabilities & applied mathematics
540
621 - Applied physics
246
629 - Other branches of engineering
206
006 - Special computer methods
187
003 - Systems
172
515 - Analysis
158
518 - Numerical analysis
123
530 - Physics
114
004 - Data processing & computer science
107
005 - Computer programming, programs & data
82
531 - Classical mechanics; solid mechanics
59
658 - General management
55
670 - Manufacturing
51
510 - Mathematics
32
512 - Algebra
29
330 - Economics
26
624 - Civil engineering
26
610 - Medicine & health
22
690 - Buildings
22
541 - Physical chemistry
16
550 - Earth sciences
11
511 - General principles of mathematics
10
660 - Chemical engineering
10
516 - Geometry
8
570 - Life sciences; biology
8
551 - Geology, hydrology & meteorology
7
535 - Light & infrared & ultraviolet phenomena
5
300 - Social sciences
4
333 - Economics of land & energy
4
500 - Natural sciences & mathematics
4
536 - Heat
4
612 - Human physiology
4
616 - Diseases
4
910 - Geography & travel
4
001 - Knowledge
3
304 - Factors affecting social behavior
3
514 - Topology
3
370 - Education
2
537 - Electricity & electronics
2
539 - Modern physics
2
543 - Analytical chemistry
2
615 - Pharmacology & therapeutics
2
628 - Sanitary & municipal engineering
2
650 - Management & auxiliary services
2
691 - Building materials
2
025 - Library operations
1
303 - Social processes
1
338 - Production
1
363 - Other social problems & services
1
more ...