Classification
620 - Engineering & allied operations
44
621 - Applied physics
28
530 - Physics
17
541 - Physical chemistry
8
538 - Magnetism
6
537 - Electricity & electronics
4
539 - Modern physics
4
535 - Light & infrared & ultraviolet phenomena
3
670 - Manufacturing
3
333 - Economics of land & energy
2
610 - Medicine & health
2
004 - Data processing & computer science
1
338 - Production
1
547 - Organic chemistry
1
548 - Crystallography
1
571 - Physiology & related subjects
1