LIBROS DEL AUTOR: william mardon beaumont

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  • The Shadow Test
    William Mardon Beaumont
    The Shadow Test: In The Diagnosis And Estimation Of Ametropia is a book written by William Mardon Beaumont in 1890. The book is a comprehensive guide to the use of the shadow test in diagnosing and estimating ametropia, a condition that affects the ability of the eye to focus on objects at different distances. The shadow test is a simple and effective method of determining the ...
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    31,32 €