Open AccessThe 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.
Author(s) -
Selwyn D. Collins
Publication year - 1924
Publication title -
public health reports (1896-1970)
Language(s) - English
Resource type - Journals
eISSN - 2327-6258
pISSN - 0094-6214
DOI - 10.2307/4577376
Subject(s) - white (mutation) , test (biology) , gerontology , medicine , psychology , demography , optometry , sociology , paleontology , biochemistry , gene , biology , chemistry
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