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      Knowledge is Power

      Scientific American August 1929

      Back of Frontispiece, August 1929

      • By Henry Fairfield Osborn on August 1, 1929

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      More in the August 1929 issue of Scientific American
      • Fungi that Kill
      • Novel Features of the O'Shaughnessy Dam
      • Reindeer With Horns in the Velvet
      View Full Contents
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