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      Knowledge is Power

      Scientific American April 05, 1919

      The Prevention and Cure of Hookworm

      Causes and Extent of the Infection, and. How It Is Being Stamped Out

      • April 5, 1919

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      More in the April 05, 1919 issue of Scientific American
      • Correspondence - April 5, 1919
      • Recently Patented Inventions - April 5, 1919
      • Exploring by Airplane
      View Full Contents
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