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<図書>
Comparison of two vision-testing devices : a study to compare visual acuity as measured by the Sight-Screener and the Sloan Letter Chart
(Public Health Service publication ; no. 1000 . Vital and health statistics ; ser. 2 . data evaluation and methods research ; no. 1)

出版者 Washington, D.C. : U.S. Dept. of Health, Education, and Welfare
出版年 1963
本文言語 英語
大きさ 33 p. ; 26 cm

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YE2-D7u/10/2-1:GLASS 12302510011147