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      Digital & 4-Year Archive

      Scientific American September 23, 1876

      Extraction of Gallium from its Ores

      • By M. Lecoq De Boisbaudran on September 23, 1876

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      More in the September 23, 1876 issue of Scientific American
      • Artificial India-Rubber
      • Cement Casks
      • Intensification of Negatives
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