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1 ene 1909 año - 1909 Danish ophthalmologist Marius Tscherning develops theory of best form lenses
Añadido al timeline:
The development of optometry through the ages
By
Christian Pot
10 abr 2021
0
0
766
fecha:
1 ene 1909 año
Ahora mismo
~ 116 years ago
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