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      Knowledge is Power

      Scientific American February 08, 1919

      Inventions New and Interesting - February 8, 1919

      A Department Devoted to Pioneer Work in the Arts

      • February 8, 1919

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      More in the February 08, 1919 issue of Scientific American
      • Battleship Guns on the Western Front
      • New Books, Etc. - February 8, 1919
      • Correspondence - February 8, 1919
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