2 agos 1939 año - FDR recieves a letter from fdr urging nuclear reaserch for america.
Descripción:
"In view of this situation you may think it desirable to have some permanent contact maintained between the Administration and the group of physicists working on chain reactions in America." from Albert Einstein to FDR
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fecha:
2 agos 1939 año
Ahora mismo
~ 84 years ago