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1 h 28 m, 2 ago 1939 ano - August 2, 1939

Descrição:

Albert Einstein writes President Franklin D. Roosevelt, alerting the President to the importance of research on chain reactions and the possibility that research might lead to developing powerful bombs.

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16 nov 2017
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406

Data:

1 h 28 m, 2 ago 1939 ano
Agora
~ 86 years ago
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