Études cristallographiques

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Leonardo da Vinci (1452-1519), Italian Renaissance painter from Florence. Engraving by Cosomo Colombini (d. 1812) after a Leonardo self portrait. Ca. 1500.

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New York NY/ USA- November 23, 2018 Hordes of shoppers throng the Macy's Herald Square flagship store in New York looking for bargains on the day after Thanksgiving, Black Friday.

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Études cristallographiques

work by Bravais

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discussed in biography

In Auguste Bravais
In Études cristallographiques (1866) he exhaustively analyzed the geometry of molecular polyhedra.
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