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      Knowledge is Power

      Scientific American February 1928

      Airship Gas Source Seen in Atmosphere, New Method of Clay Pipe Manufacture and more

      • February 1, 1928

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      More in the February 1928 issue of Scientific American
      • "Hot Dogs" de Luxe
      • Curbing the Mississippi
      • Hydroelectric Fuel, Electrolytic Zinc in France and more
      View Full Contents
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