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      Celebrate Math Awareness Month

      Scientific American June 1974

      Mathematical Games, June 1974

      Dr. Matrix brings his numerological Science to bear on the occult powers of the pyramid

      • By Martin Gardner

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      More in the June 1974 issue of Scientific American
      • Letters to the Editors, June 1974
      • Science and the Citizen, June 1974
      • 50 and 100 Years Ago, June 1974
      View Full Contents
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