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      Scientific American June 22, 1907

      Artificial Fertilizers: Their Nature and Function.—III

      The Nitrogenous Manures

      • By A. D. Hall on June 22, 1907

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      More in the June 22, 1907 issue of Scientific American
      • Electrical Notes
      • Pear-Shaped Stars
      • The Del Proposto System of Electrical Transmission Gear for the Propulsion of Ships by Irreversible Engines
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