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Yevgraf Fyodorov

Russian mathematician, crystallographer, and mineralogist.

Born December 22nd, 1853 in Orenburg.

Died May 21st, 1919 at 65 years old in Saint Petersburg (pneumonia).

Occupations
academic, crystallographer, geologist, mathematician, mineralogist, mining engineer, naturalist, professor
Wikipedia
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There is still no cure for the common birthday. John Glenn