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      Knowledge is Power

      Scientific American September 28, 1907

      The Kafue River Bridge on the Cape to Cairo Railroad

      The Longest in Africa by the English Correspondent of the Scientific American

      • September 28, 1907

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      More in the September 28, 1907 issue of Scientific American
      • Cause of Vitiation of Confined Air
      • Potassium Chloroplatinite for Photographic Use
      • Trade Notes and formulæ
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