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21 mar 1780 año - Lentes Bifocales por Benjamin Franklin.
Descripción:
Lentes bifocales son lentes correctivas que contienen dos potencias diferentes.
Añadido al timeline:
Alexander Chicas 1°-K-ITSI
By
Alexander Rivas
31 oct 2017
0
0
864
fecha:
21 mar 1780 año
Ahora mismo
~ 244 years ago
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