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1 Jan 1939 Jahr - Discovery of Francium

Beschreibung:

Marguerite Perey and Victor Alexander

Zugefügt zum Band der Zeit:

The Elementals

ByVelociraptor 26

19 Dez 2018

1

0

411

Datum:

1 Jan 1939 Jahr

Jetzt

~ 86 years ago

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