Classification
620 - Engineering & allied operations
142
621 - Applied physics
119
530 - Physics
75
537 - Electricity & electronics
25
541 - Physical chemistry
12
539 - Modern physics
8
670 - Manufacturing
8
500 - Natural sciences & mathematics
4
543 - Analytical chemistry
3
548 - Crystallography
3
660 - Chemical engineering
3
004 - Data processing & computer science
2
519 - Probabilities & applied mathematics
2
546 - Inorganic chemistry
2
003 - Systems
1
005 - Computer programming, programs & data
1
006 - Special computer methods
1
333 - Economics of land & energy
1
518 - Numerical analysis
1
531 - Classical mechanics; solid mechanics
1
536 - Heat
1
538 - Magnetism
1
571 - Physiology & related subjects
1
630 - Agriculture & related technologies
1
667 - Cleaning, color & coating technologies
1