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      Scientific American November 1923

      Ball Bearings and how they are Made

      The Tiny but Perfect Spheres that Keep Down the Friction Toll in Modern Machinery

      • By Robert G. Skerrett

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      More in the November 1923 issue of Scientific American
      • Automobiles and Near-Automobiles, Forests and Fertility and more
      • Fish as Food and Fertilizer
      • Miscellaneous, November 1923
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