bn:00398701n
Noun Named Entity
Categories: Moscow State University alumni, 1869 births, Central Aerohydrodynamic Institute employees, Heroes of Socialist Labour, Corresponding Members of the Russian Academy of Sciences (1917–25)
EN
Sergey Chaplygin  Sergei Alekseevich Chaplygin  Sergei Chaplygin  Sergej Alekseevich Chaplygin  Sergey Alexeyevich Chaplygin
EN
Sergey Alexeyevich Chaplygin was a Russian and Soviet physicist, mathematician, and mechanical engineer. Wikipedia
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