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      Knowledge is Power

      Scientific American April 1922

      Curbing the Colorado

      Flood Control, Irrigation, and Power Generation All In One Gigantic Construction

      • By Robert G. Skerrett on April 1, 1922

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      More in the April 1922 issue of Scientific American
      • A Drill for the Tree-Dentist, Auto-Bus Stability, and more
      • At the Sending End of Radio
      • Inventions New and Interesting, April 1922
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