Classification
001 - Knowledge
4
003 - Systems
44
004 - Data processing & computer science
260
005 - Computer programming, programs & data
152
006 - Special computer methods
592
020 - Library & information sciences
1
025 - Library operations
15
040 - [Unassigned]
2
300 - Social sciences
8
303 - Social processes
5
332 - Financial economics
3
333 - Economics of land & energy
11
336 - Public finance
1
343 - Military, tax, trade & industrial law
3
363 - Other social problems & services
6
370 - Education
1
500 - Natural sciences & mathematics
2
502 - Miscellany
2
510 - Mathematics
2
511 - General principles of mathematics
6
512 - Algebra
1
515 - Analysis
10
516 - Geometry
1
518 - Numerical analysis
48
519 - Probabilities & applied mathematics
58
520 - Astronomy & allied sciences
1
530 - Physics
24
535 - Light & infrared & ultraviolet phenomena
7
540 - Chemistry & allied sciences
1
541 - Physical chemistry
23
542 - Techniques, equipment & materials
5
543 - Analytical chemistry
4
547 - Organic chemistry
11
548 - Crystallography
3
550 - Earth sciences
2
551 - Geology, hydrology & meteorology
2
560 - Paleontology; paleozoology
8
570 - Life sciences; biology
540
571 - Physiology & related subjects
178
572 - Biochemistry
192
573 - Specific physiological systems in animals
3
576 - Genetics & evolution
31
577 - Ecology
14
579 - Microorganisms, fungi & algae
75
580 - Plants (Botany)
72
581 - Specific topics in natural history
38
590 - Animals (Zoology)
3
591 - Specific topics in natural history
3
592 - Invertebrates
2
596 - Chordates
1
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