Joined On : April 20, 2009

Chemical Heritage Foundation

Teacher https://www.teachertube.com/user/channel/Chemheritage
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The First Chemistry Textbook: Andre... From: Chemheritage
Added: 7 years ago
Views: 2,699
2,699
The Museum at the Chemical Heritage... From: Chemheritage
Added: 9 years ago
Views: 1,094
1,094

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