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      Scientific American January 03, 1914

      Construction of a Fifty-Watt Transformer

      Directions for the Amateur Electrician

      • By Charles F. Fraasa on January 3, 1914

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      More in the January 03, 1914 issue of Scientific American
      • Note on the History and Significance of Biochemistry, The Longevity of Microbes
      • Darwinism One Hundred Years Ago
      • On the Origin of Solar Electricity
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