Classification
620 - Engineering & allied operations
75
530 - Physics
21
670 - Manufacturing
12
660 - Chemical engineering
7
541 - Physical chemistry
6
621 - Applied physics
6
531 - Classical mechanics; solid mechanics
4
380 - Commerce, communications & transportation
2
539 - Modern physics
2
546 - Inorganic chemistry
2
547 - Organic chemistry
2
548 - Crystallography
2
600 - Technology
2
610 - Medicine & health
2
900 - History & geography
2
000 - Computer science, information & general works
1
333 - Economics of land & energy
1
338 - Production
1
500 - Natural sciences & mathematics
1
535 - Light & infrared & ultraviolet phenomena
1
537 - Electricity & electronics
1
538 - Magnetism
1
571 - Physiology & related subjects
1
629 - Other branches of engineering
1
668 - Technology of other organic products
1
700 - The arts; fine & decorative arts
1