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      Scientific American October 1928

      New Languages from Old

      How Secrecy Is Gained by the Inversion of Speech Sounds

      • By Clyde R. Keith on October 1, 1928

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      More in the October 1928 issue of Scientific American
      • All Metal Guitars, Marcel Waver and more
      • Good to the Last Bite, The Fountain Pen Invention and more
      • The Heavens in October 1928
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