Classification
000 - Computer science, information & general works
15
003 - Systems
1
006 - Special computer methods
2
140 - Specific philosophical schools
1
170 - Ethics
1
300 - Social sciences
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
320 - Political science
13
330 - Economics
16
333 - Economics of land & energy
15
338 - Production
2
340 - Law
2
341 - Law of nations
1
343 - Military, tax, trade & industrial law
1
360 - Social problems & services; associations
1
363 - Other social problems & services
22
370 - Education
1
380 - Commerce, communications & transportation
4
414 - Phonology & phonetics
2
500 - Natural sciences & mathematics
7
519 - Probabilities & applied mathematics
2
520 - Astronomy & allied sciences
4
523 - Specific celestial bodies & phenomena
7
526 - Mathematical geography
5
530 - Physics
5
531 - Classical mechanics; solid mechanics
1
534 - Sound & related vibrations
1
539 - Modern physics
2
540 - Chemistry & allied sciences
45
541 - Physical chemistry
26
543 - Analytical chemistry
4
546 - Inorganic chemistry
8
547 - Organic chemistry
2
548 - Crystallography
12
549 - Mineralogy
243
550 - Earth sciences
43
551 - Geology, hydrology & meteorology
222
552 - Petrology
2
553 - Economic geology
14
560 - Paleontology; paleozoology
1
571 - Physiology & related subjects
3
572 - Biochemistry
2
576 - Genetics & evolution
5
577 - Ecology
7
578 - Natural history of organisms
3
579 - Microorganisms, fungi & algae
2
580 - Plants (Botany)
2
581 - Specific topics in natural history
3
590 - Animals (Zoology)
1
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