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      Scientific American April 03, 1915

      More Mysteries of Ultra-violet Light

      • By Leonard Keene Hirshberg on April 3, 1915

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      More in the April 03, 1915 issue of Scientific American
      • Location Of Motorcycle Power Plant Troubles
      • The Submarine at Sea
      • Producing the Effective Temperature of the Sun, World's Largest Soup Kitchen and more
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