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      Knowledge is Power

      Scientific American November 20, 1920

      Taming the River Nile

      Construction of Dams and a 225-Mile Canal to Double the Irrigated Area in Egypt

      • By H. C. Hardy on November 20, 1920

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      More in the November 20, 1920 issue of Scientific American
      • A Giant Ingot-Mold Casting in the Making
      • Our Coal in the Making
      • The Five States of Matter
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