Excerpt from Standardization of Some of the Common Tests Used in Determining the Acuteness of Vision of School Children: A Thesis
Most, if not all of the tests, both letters and characters used for testing the acuteness of school children are based, in theory, at least, upon the Snellen test letters.
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PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Artikel-Nr. LW-9781333300524
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PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Artikel-Nr. LW-9781333300524
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