Daily Element
Thursday, February 7, 2019
Fluorine
Fluorine-Avery
https://docs.google.com/presentation/d/1-4qBy9vY0CDa2Ss-yc4mGhqjUpajvEjenYfhNXqAT1A/edit?ts=5c5cb379#slide=id.g4cba3eefed_0_89
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