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      Knowledge is Power

      Scientific American January 04, 1919

      Dyes in Photography

      Their Use in Orthochromatic Work and for Non-Halation Plates

      • By A. Seyewetz on January 4, 1919

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      More in the January 04, 1919 issue of Scientific American
      • Coal Gas for Motor Vehicles in England
      • Morphology and Biology
      • The Oyster Feeds both Man and Plants
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