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      Scientific American December 09, 1916

      The Raw Materials used by the Rubber Manufacturers

      And Various Processes Employed

      • By B. D. Porritt on December 9, 1916

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      More in the December 09, 1916 issue of Scientific American
      • Progressive Oxidation of Cold Storage Butter
      • Animals of Blown Glass
      • Rhododendrons and Lime
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