Classification
530 - Physics
20
621 - Applied physics
13
539 - Modern physics
10
620 - Engineering & allied operations
7
537 - Electricity & electronics
5
531 - Classical mechanics; solid mechanics
4
523 - Specific celestial bodies & phenomena
3
543 - Analytical chemistry
2
515 - Analysis
1
519 - Probabilities & applied mathematics
1
535 - Light & infrared & ultraviolet phenomena
1
670 - Manufacturing
1