UDC:5 Mathematics and natural sciences

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Common auxiliaries

## 5 Mathematics and natural sciences

50 | Generalities about the pure sciences
51 | Mathematics
52 | Astronomy. Astrophysics. Space research. Geodesy
53 | Physics
54 | Chemistry. Crystallography. Mineralogy
55 | Earth sciences. Geology, meteorology, etc.
56 | Palaeontology
57 | Biological sciences in general
58 | Botany
59 | Zoology

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