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AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
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1 jan 1940 ano - Philip H. Abelson descubre el Neptunio.
Adicionado na linha do tempo:
Fechas de descubrimiento de los elementos.
By
Ysac
24 jan 2021
0
0
238
Data:
1 jan 1940 ano
Agora
~ 85 years ago
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