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Eyesight of the school child as determined by the Snellen test : a statistical study of the results of vision tests of 9,245 native white children in New York State, Delaware, South Carolina, and Frederick County, Md., and of 2,636 white children in Cecil County, Md
Content Provider | HathiTrust Digital Library |
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Author | Collins, Selwyn D |
Editor | Selwyn D. Collins |
Volume Number | 975 |
Language | English |
Publisher | Government Printing Office |
Publisher Date | 1925-01-01 |
Publisher Place | Washington D.C. |
Access Restriction | Open |
Rights License | Items in this record are available as Public Domain, Google-digitized. View the access and use profile at http://www.hathitrust.org/access_use#pd-google. Please see individual items for rights and use statements |
Subject Keyword | Testing Eye Vision Vision disorders in children |
Content Type | Text |
Resource Type | Book |