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      Knowledge is Power

      Scientific American May 02, 1914

      Sound Perception v. Deafness, Door Bells and Alarm Clocks, and more

      • By Stanley Robinson on May 2, 1914

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      More in the May 02, 1914 issue of Scientific American
      • Correspondence- May 2, 1914
      • Notes and Queries- May 2, 1914
      • The Heavens in May
      View Full Contents
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