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Start Over Collections Medicine in the Americas, 1610-1920 ✖Remove constraint Collections: Medicine in the Americas, 1610-1920 Subjects Retinoscopy ✖Remove constraint Subjects: Retinoscopy Titles Skiascopy: a treatise on the shadow test in its practical application to the work of refraction : with an explanation in detail of the optical principles on which the science is based ✖Remove constraint Titles: Skiascopy: a treatise on the shadow test in its practical application to the work of refraction : with an explanation in detail of the optical principles on which the science is based

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  • Skiascopy: a treatise on the shadow test in its practical application to the work of refraction : with an explanation in detail of the optical principles on which the science is based1