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      Celebrate Math Awareness Month

      Scientific American December 1963

      The Master Switch of Life

      Studies of diving have led to the identification of the vertebrate animal's ultimate defense against asphyxia: a gross redistribution of the circulation that concentrates oxygen in the brain and heart

      • By P. F. Scholander

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      More in the December 1963 issue of Scientific American
      • Erratum
      • Science and the Citizen: December 1963
      • Vehicular Traffic Flow
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