Classification
001 - Knowledge
1
003 - Systems
3
005 - Computer programming, programs & data
4
006 - Special computer methods
5
040 - [Unassigned]
3
057 - Serials in Slavic languages
2
061 - Organizations in North America
66
140 - Specific philosophical schools
1
170 - Ethics
1
174 - Occupational ethics
1
300 - Social sciences
1
301 - Sociology & anthropology
5
306 - Culture & institutions
1
333 - Economics of land & energy
3
363 - Other social problems & services
1
500 - Natural sciences & mathematics
5
510 - Mathematics
1
515 - Analysis
1
520 - Astronomy & allied sciences
2
530 - Physics
12
531 - Classical mechanics; solid mechanics
1
536 - Heat
1
539 - Modern physics
1
541 - Physical chemistry
3
543 - Analytical chemistry
10
546 - Inorganic chemistry
5
547 - Organic chemistry
14
551 - Geology, hydrology & meteorology
3
560 - Paleontology; paleozoology
2
570 - Life sciences; biology
71
571 - Physiology & related subjects
1,783
572 - Biochemistry
350
573 - Specific physiological systems in animals
4
576 - Genetics & evolution
17
577 - Ecology
15
579 - Microorganisms, fungi & algae
93
580 - Plants (Botany)
89
581 - Specific topics in natural history
11
590 - Animals (Zoology)
44
591 - Specific topics in natural history
3
592 - Invertebrates
1
595 - Arthropods
1
596 - Chordates
1
599 - Mammals
4
610 - Medicine & health
223
611 - Human anatomy, cytology & histology
33
612 - Human physiology
197
613 - Personal health & safety
5
614 - Incidence & prevention of disease
20
615 - Pharmacology & therapeutics
78
more ...