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      Scientific American July 22, 1911

      Poisonous Chemical Products

      Suggestions for the Workman

      • By Levin on July 22, 1911

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      More in the July 22, 1911 issue of Scientific American
      • A Successful Submarine Niǵht Attach
      • Electric Stage Liǵhts
      • Johann Wolfǵanǵ von Goethe
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