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      Scientific American August 19, 1916

      Natural Tree Surgery

      How Unprofitable Parts are Eliminated in the Vegetable Kingdom

      • By David Brock on August 19, 1916

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      More in the August 19, 1916 issue of Scientific American
      • Battling With 300 Tons of Calcium Carbide
      • First Electric Boat-Lift in Holland, High-Speed Steel Alloy by New Process, and more
      • German Official Story of the Skagerrak Sea Fight
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