Dr. Snellen's 20/20: the development and use of the eye chart.
作者信息
Brajkovich H L
出版信息
J Sch Health. 1980 Oct;50(8):472-4. doi: 10.1111/j.1746-1561.1980.tb03134.x.
Abstract
摘要
Brajkovich H L
J Sch Health. 1980 Oct;50(8):472-4. doi: 10.1111/j.1746-1561.1980.tb03134.x.
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