Die Entstehung der sphärischen Refraktionen des menschlichen Auges : (Übersichtigkeit - Normalsichtigkeit - Kurzsigtigkeit) / von Adolf Steiger.

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Die Entstehung der sphärischen Refraktionen des menschlichen Auges : (Übersichtigkeit - Normalsichtigkeit - Kurzsigtigkeit) / von Adolf Steiger. In copyright. Source: Wellcome Collection.

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