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      Scientific American November 1979

      50 and 100 Years Ago, November 1979

      Articles from the Scientific American archive

      • November 1, 1979

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      More in the November 1979 issue of Scientific American
      • The Ecology of the African Dung Beetle
      • Letters to the Editors, November 1979
      • Science and the Citizen, November 1979
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