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1 Jan 1940 Jahr - At

Beschreibung:

Астат
открыли Дэйл Раймонд Корсон, Эмилио Джино Сегре и Кеннет Росс Маккензи

Zugefügt zum Band der Zeit:

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12 Nov 2018

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1 Jan 1940 Jahr

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~ 85 years ago

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