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      Scientific American November 23, 1912

      The Conquest of the Air by the Chemist

      Oxidation of Atmospheric Nitrogen and the Development of the Resulting Industries of Norway

      • November 23, 1912

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      More in the November 23, 1912 issue of Scientific American
      • Grinding Wheels and Safety of Operation
      • The Incongruities of American Patent Litigation
      • Native Placer Mining in Colombia
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