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jan 1, 442 BC - Source

Description:

“Democritus.” The History of the Atom, thehistoryoftheatom.weebly.com/democritus.html. Accessed 16 Sept. 2017.

Added to timeline:

Atom Theory History - Thomas Evenson

ByThomas Evenson
19 Sep 2017
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Date:

jan 1, 442 BC
Now
~ 2469 years ago
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