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      Digital & 4-Year Archive

      Scientific American April 07, 1917

      Why the Average American Dies at Forty-three

      • By R. W. Lockwood on April 7, 1917

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      More in the April 07, 1917 issue of Scientific American
      • A New French Artificial Eye
      • Inventions New and Interesting- April 7, 1917
      • Germany's Submarine Effort, Clandestine Wireless Stations Here and Abroad, and more
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