Classification
620 - Engineering & allied operations
1,330
530 - Physics
203
621 - Applied physics
150
541 - Physical chemistry
126
670 - Manufacturing
81
543 - Analytical chemistry
74
660 - Chemical engineering
74
531 - Classical mechanics; solid mechanics
61
546 - Inorganic chemistry
57
537 - Electricity & electronics
39
006 - Special computer methods
34
539 - Modern physics
27
691 - Building materials
25
536 - Heat
20
548 - Crystallography
20
062 - Organizations in British Isles; in England
19
547 - Organic chemistry
19
629 - Other branches of engineering
16
538 - Magnetism
14
571 - Physiology & related subjects
14
610 - Medicine & health
14
572 - Biochemistry
13
667 - Cleaning, color & coating technologies
13
549 - Mineralogy
11
624 - Civil engineering
10
500 - Natural sciences & mathematics
9
519 - Probabilities & applied mathematics
9
363 - Other social problems & services
7
534 - Sound & related vibrations
7
690 - Buildings
7
535 - Light & infrared & ultraviolet phenomena
6
628 - Sanitary & municipal engineering
6
333 - Economics of land & energy
5
540 - Chemistry & allied sciences
5
612 - Human physiology
5
004 - Data processing & computer science
4
515 - Analysis
4
550 - Earth sciences
4
577 - Ecology
4
630 - Agriculture & related technologies
4
664 - Food technology
4
930 - History of ancient world to ca. 499
4
502 - Miscellany
3
580 - Plants (Botany)
3
615 - Pharmacology & therapeutics
3
634 - Orchards, fruits & forestry
3
641 - Food & drink
3
003 - Systems
2
330 - Economics
2
520 - Astronomy & allied sciences
2
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