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      Scientific American October 23, 1920

      Something New in Gasoline-Driven Plowing Machines

      • By James H. Rodgers on October 23, 1920

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      More in the October 23, 1920 issue of Scientific American
      • A Mechanical Age for the Farm
      • Piloting the Ship with the Ears, Rust Preventives
      • The Service of the Chemist
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