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AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
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1 gen 1794 anni - Johan Gadolin descubre el Itrio.

Aggiunto al nastro di tempo:

Fechas de descubrimiento de los elementos.

ByYsac
24 gen 2021
0
0
237

Data:

1 gen 1794 anni
Adesso
~ 231 years ago
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