Classification
515 - Analysis
50
530 - Physics
46
518 - Numerical analysis
16
519 - Probabilities & applied mathematics
13
531 - Classical mechanics; solid mechanics
13
620 - Engineering & allied operations
12
539 - Modern physics
9
512 - Algebra
7
621 - Applied physics
6
001 - Knowledge
5
300 - Social sciences
5
003 - Systems
4
330 - Economics
4
516 - Geometry
4
534 - Sound & related vibrations
4
536 - Heat
4
510 - Mathematics
3
523 - Specific celestial bodies & phenomena
3
629 - Other branches of engineering
3
004 - Data processing & computer science
2
006 - Special computer methods
2
500 - Natural sciences & mathematics
2
514 - Topology
2
520 - Astronomy & allied sciences
2
541 - Physical chemistry
2
658 - General management
2
005 - Computer programming, programs & data
1
361 - Social problems & social welfare in general
1
511 - General principles of mathematics
1
535 - Light & infrared & ultraviolet phenomena
1
537 - Electricity & electronics
1
543 - Analytical chemistry
1
550 - Earth sciences
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
650 - Management & auxiliary services
1