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      Knowledge is Power

      Scientific American November 22, 1919

      The Draft-Horse Situation

      How the Gasoline Tractor and the Motor Vehicle Have Affected Our Equine Statistics

      • November 22, 1919

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      More in the November 22, 1919 issue of Scientific American
      • What the War Taught Us About Motor Trucks
      • Americas Automobile Industry
      • Why Are Lunar Eclipses Visible?, Alcohol presents a Substitute for Acetylene and more
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