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1 ene 1904 año - Получен синтетический анестетик новокаина.

Descripción:

Альфред Эйнхорн, немецкий химик, получил синтетический анестетик новокаина.

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Bynn36307
1 dic 2018
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fecha:

1 ene 1904 año
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~ 121 years ago
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