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      Knowledge is Power

      Scientific American May 23, 1914

      Some Helps for the Music Teacher, Aeroplane Bomb in Morocco, and more

      • By Alfred Gradenwitz on May 23, 1914

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      More in the May 23, 1914 issue of Scientific American
      • New Books, Etc.- May 23, 1914
      • The World's Largest Steamship
      • Recently Patented Inventions- May 23, 1914
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