Hannah Jones

@joneshannah978

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 #OnThisDay in #history
February 27 1940 Carbon-14 is Discovered by Martin Kamen nd Samuel Ruben
http://ow.ly/i5qpX

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513 days ago

#OnThisDay in #history
February 27 1940 Carbon-14 is Discovered by Martin Kamen nd Samuel Ruben
http://ow.ly/i5qpX

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