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      Knowledge is Power

      Scientific American September 18, 1920

      Putting the Payroll on an Automatic Basis

      • By Charles Abbott Goddard on September 18, 1920

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      More in the September 18, 1920 issue of Scientific American
      • A Mammoth Steam Unit and its Work, Aluminum Dust Explosions and more
      • Correspondence - September 18, 1920
      • Shortening the Route from Farm to Consumer
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