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      Knowledge is Power

      Scientific American October 14, 1893

      A Microscopical and Analytical Study of Coca Leaves

      • By Alfred R. L. Dohme on October 14, 1893

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      More in the October 14, 1893 issue of Scientific American
      • Apparatus for Ascertaining the Efficiency of Screw Propellers
      • Jet Propulsion
      • Patents!
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