Classification
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511 - General principles of mathematics
5
512 - Algebra
1
515 - Analysis
25
516 - Geometry
4
518 - Numerical analysis
10
519 - Probabilities & applied mathematics
396
520 - Astronomy & allied sciences
57
523 - Specific celestial bodies & phenomena
32
526 - Mathematical geography
57
530 - Physics
120
531 - Classical mechanics; solid mechanics
27
535 - Light & infrared & ultraviolet phenomena
4
536 - Heat
4
537 - Electricity & electronics
6
538 - Magnetism
1
539 - Modern physics
8
540 - Chemistry & allied sciences
47
541 - Physical chemistry
13
542 - Techniques, equipment & materials
1
543 - Analytical chemistry
12
546 - Inorganic chemistry
8
547 - Organic chemistry
1
548 - Crystallography
1
549 - Mineralogy
32
550 - Earth sciences
970
551 - Geology, hydrology & meteorology
711
552 - Petrology
2
553 - Economic geology
20
554 - Earth sciences of Europe
1
557 - Earth sciences of North America
1
559 - Earth sciences of other areas
2
560 - Paleontology; paleozoology
22
570 - Life sciences; biology
36
571 - Physiology & related subjects
9
572 - Biochemistry
4
574 - [Unassigned]
4
576 - Genetics & evolution
36
577 - Ecology
167
578 - Natural history of organisms
18
579 - Microorganisms, fungi & algae
14
580 - Plants (Botany)
39
581 - Specific topics in natural history
40
590 - Animals (Zoology)
14
591 - Specific topics in natural history
1
600 - Technology
121
610 - Medicine & health
41
612 - Human physiology
2
613 - Personal health & safety
3
614 - Incidence & prevention of disease
3
615 - Pharmacology & therapeutics
3
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