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1 janv. 1812 - The first American wood pencils were made.

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By Dmgerman at en.wikipedia [CC BY 3.0 (http://creativecommons.org/licenses/by/3.0)], from Wikimedia Commons

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A Brief History of Educational Technology

18 sept. 2017

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1 janv. 1812

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~ Il y a 213 ans

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