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      Scientific American November 23, 1912

      Grinding Wheels and Safety of Operation

      Protecting Human Life and Limb

      • November 23, 1912

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      More in the November 23, 1912 issue of Scientific American
      • The Incongruities of American Patent Litigation
      • Native Placer Mining in Colombia
      • A Method of Mimicking Amoeboid Motion' and Protoplasmic Streaming
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