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      Scientific American June 05, 1915

      Converting Night into Day

      Artificial Lighting Problems and How They Have Been Solved What the Inventor Has Done for Oil, Gas, and Electricity in Illumination

      • By Carl Auer von Welsbach, Charles F. Brush on June 5, 1915

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      More in the June 05, 1915 issue of Scientific American
      • Our Seventieth Anniversary, The Greatest Ten Years of Invention, The Super-Battle-Cruiser
      • Some Personal Recollections
      • Transportation on Land and Sea
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