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      Knowledge is Power

      Scientific American January 31, 1920

      Electricity and the Census

      A Glance at the Machines That Make 0ur Decennial Inventory a Matter of Weeks Instead of Years

      • By J. A. Stewart on January 31, 1920

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      More in the January 31, 1920 issue of Scientific American
      • A Vegetable Manufacturer of Decorated Glass
      • Mountain-Peak Grazing
      • Anti-Corrosion Engineering
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