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      Scientific American March 04, 1911

      Rawhide Hammer, Cone Center Dividers, and more

      • By H. M. Nichols on March 4, 1911

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      More in the March 04, 1911 issue of Scientific American
      • Case for Phonograph Records
      • The Bleriot "Bus"
      • The Panama Canal Must be Fortified, Oil Fuel on Ocean Liners, and more
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