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      Scientific American July 29, 1905

      The Constituents of Gutta-Percha

      • By A. Tschirch, O. Muller on July 29, 1905

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      More in the July 29, 1905 issue of Scientific American
      • A Sample Taker for use in Dredging Operations
      • English Motor Omnibuses for City and Country Use
      • The Tunnels of the World
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