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      Scientific American April 1982

      Metamagical Themas, April 1982

      The music of Frédéric Chopin: startling aural patterns that also startle the eye

      • By Douglas R. Hofstadter on April 1, 1982

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      More in the April 1982 issue of Scientific American
      • Bibliography, April 1982
      • Science And The Citizen, April 1982
      • Variations in Medical Care among Small Areas
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