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      Knowledge is Power

      Scientific American August 1923

      Inventions New and Interesting, August 1923

      A Department Devoted to Pioneer Work in the Various Arts and to Patent News

      • August 1, 1923

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      More in the August 1923 issue of Scientific American
      • Concrete in the Making
      • Insect-Eating Insects
      • Mechanical Engineering Notes, August 1923
      View Full Contents
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