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![Papers on the Comparative Merits of the Catoptric and Dioptric or Catadioptric Systems of Light-House Illumination [Paperback]](/itemImage/2/6/7/1/2_6400269.jpg "Papers on the Comparative Merits of the Catoptric and Dioptric or Catadioptric Systems of Light-House Illumination [Paperback]")