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      Digital & 4-Year Archive

      Scientific American July 1980

      Mathematical Games, July 1980

      The pleasures of doing Science and technology in the planiverse

      • By Martin Gardner on July 1, 1980

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      More in the July 1980 issue of Scientific American
      • Bibliography, July 1980
      • Megalithic Monuments
      • The Physiology of the Koala
      View Full Contents
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