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30 marzo 1956 anni - After many atomic bombs during World War II and the consequences of radiation in people result, "A National Academy of Sciences Committee issues a report asserting no safe threshold for radiation exposure."

Aggiunto al nastro di tempo:

1st Nine Weeks Honor Project Chemistry

ByAyanna
18 ott 2018
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Data:

30 marzo 1956 anni
Adesso
~ 69 years ago
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