Classification
621 - Applied physics
271
620 - Engineering & allied operations
81
004 - Data processing & computer science
29
530 - Physics
29
006 - Special computer methods
15
537 - Electricity & electronics
15
610 - Medicine & health
10
541 - Physical chemistry
7
535 - Light & infrared & ultraviolet phenomena
4
543 - Analytical chemistry
4
547 - Organic chemistry
4
600 - Technology
4
003 - Systems
2
005 - Computer programming, programs & data
2
518 - Numerical analysis
2
538 - Magnetism
2
546 - Inorganic chemistry
2
572 - Biochemistry
2
629 - Other branches of engineering
2
660 - Chemical engineering
2
062 - Organizations in British Isles; in England
1
388 - Transportation; ground transportation
1
500 - Natural sciences & mathematics
1
509 - Historical, geographic & persons treatment
1
515 - Analysis
1
532 - Fluid mechanics; liquid mechanics
1
542 - Techniques, equipment & materials
1
571 - Physiology & related subjects
1
615 - Pharmacology & therapeutics
1
616 - Diseases
1