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current | 18:19, 26 June 2013 | 1,000 × 667 (232 KB) | Mary Mark Ockerbloom | {{Information |Description ={{en|1=James Voelkel, Kelly Ohlert, and David Thomsen in the Rare Book Room at the Chemical Heritage Foundation, June 20, 2013, at the Chemical Heritage Foundation Wikipedia Edit-a-thon. }} |Source =Chemical H... |
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