Classification
530 - Physics
161
515 - Analysis
29
531 - Classical mechanics; solid mechanics
17
621 - Applied physics
15
536 - Heat
14
537 - Electricity & electronics
14
620 - Engineering & allied operations
14
519 - Probabilities & applied mathematics
12
518 - Numerical analysis
11
510 - Mathematics
8
541 - Physical chemistry
7
520 - Astronomy & allied sciences
6
005 - Computer programming, programs & data
5
512 - Algebra
5
535 - Light & infrared & ultraviolet phenomena
4
539 - Modern physics
3
624 - Civil engineering
3
500 - Natural sciences & mathematics
2
629 - Other branches of engineering
2
003 - Systems
1
004 - Data processing & computer science
1
006 - Special computer methods
1
418 - Standard usage & applied linguistics
1
516 - Geometry
1
523 - Specific celestial bodies & phenomena
1
540 - Chemistry & allied sciences
1
542 - Techniques, equipment & materials
1
571 - Physiology & related subjects
1
612 - Human physiology
1
616 - Diseases
1
670 - Manufacturing
1