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      Scientific American April 1932

      Art Restorations and Frauds

      Detected by the Use of Ultra-violet Radiation

      • By Albert A. Hopkins

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      More in the April 1932 issue of Scientific American
      • Back of Frontispiece, April 1932
      • Improved Technique of Handling Airships on the Ground
      • Totem Poles
      View Full Contents
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