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      Knowledge is Power

      Scientific American April 17, 1886

      An Improved Appliance in Physiological Treatment of Cleft Palate

      • By Henry A. Baker on April 17, 1886

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      More in the April 17, 1886 issue of Scientific American
      • Du Rocher's Electric Megaloscope and Pile
      • Isaac Newton
      • Stereotype Machine
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