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      Knowledge is Power

      Scientific American June 16, 1917

      Chemicals for Laboratory Use

      Their Purity,and the Investigations Preparatory to Their Production

      • By William Rintoul on June 16, 1917

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      More in the June 16, 1917 issue of Scientific American
      • A Modern Commercial Volcano
      • Detecting the Pretense of Deafness
      • Protecting Merchant Vessels against Submarines
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