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      Knowledge is Power

      Scientific American August 1929

      Foiling the Burglar—II

      The Time Element Versus the Burglar. A Continual Battle of Keen Minds

      • By A. A. Hopkins 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
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