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      Scientific American March 03, 1917

      Reply to Mr. Norman J. Symons' Article in Scientific American Supplement, Dec. 9th, 1916

      • March 3, 1917

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      More in the March 03, 1917 issue of Scientific American
      • A Gas Pressure Reducer
      • Cork Fabric for Featherweight Raincoats
      • Photo-Micrography for the Amateur
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