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      Nobel Prize Sale!

      The Sciences

      The American Conquest of the Air

      Shall the United States Pay Further Tribute to Other Nations for Her Supply of Combined Nitrogen?
      [Article on nitrogen-based fertilizers]

      • By Thomas H. Norton on March 4, 1916
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      ABOUT THE AUTHOR(S)

        Recent Articles by Thomas H. Norton

        • The Evolution of Artificial Dyestuffs
        • American Sources of Nitrogen
        • A Census of Colors
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