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      Knowledge is Power

      Scientific American July 21, 1917

      Internal Combustion Engines for Farm Use

      Horse-Power and Other Technical Matters Translated Into Terms of Farm Work

      • By Victor W. Page on July 21, 1917

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      More in the July 21, 1917 issue of Scientific American
      • Exploring the Realms of Science for Photographic Improvements
      • Science- July 21, 1917
      • Exploring Live Volcanoes, Find the Leak, and more
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