Classification
006 - Special computer methods
592
570 - Life sciences; biology
540
004 - Data processing & computer science
260
610 - Medicine & health
218
616 - Diseases
208
572 - Biochemistry
192
571 - Physiology & related subjects
178
005 - Computer programming, programs & data
152
660 - Chemical engineering
80
579 - Microorganisms, fungi & algae
75
580 - Plants (Botany)
72
621 - Applied physics
66
612 - Human physiology
59
519 - Probabilities & applied mathematics
58
620 - Engineering & allied operations
56
615 - Pharmacology & therapeutics
49
518 - Numerical analysis
48
003 - Systems
44
581 - Specific topics in natural history
38
630 - Agriculture & related technologies
33
576 - Genetics & evolution
31
611 - Human anatomy, cytology & histology
31
631 - Techniques, equipment & materials
28
599 - Mammals
27
530 - Physics
24
541 - Physical chemistry
23
614 - Incidence & prevention of disease
21
025 - Library operations
15
577 - Ecology
14
629 - Other branches of engineering
13
333 - Economics of land & energy
11
547 - Organic chemistry
11
515 - Analysis
10
300 - Social sciences
8
560 - Paleontology; paleozoology
8
535 - Light & infrared & ultraviolet phenomena
7
670 - Manufacturing
7
363 - Other social problems & services
6
511 - General principles of mathematics
6
664 - Food technology
6
303 - Social processes
5
542 - Techniques, equipment & materials
5
658 - General management
5
001 - Knowledge
4
543 - Analytical chemistry
4
628 - Sanitary & municipal engineering
4
636 - Animal husbandry
4
332 - Financial economics
3
343 - Military, tax, trade & industrial law
3
548 - Crystallography
3
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