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1 h 28 min, 2 août 1939 ans - August 2, 1939

Description:

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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Date:

1 h 28 min, 2 août 1939 ans
Maintenaint
~ Il y a 86 ans
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