Roberts, Jean,    1918- <br/><br/>
Visual acuity of children, United States /  
[by Jean Roberts and K enneth R. Duyan] 
 - Washington :    U.S. Health Services and Mental Health Administratio n,    1970. 
 - iv, 35 p. :    illus. ;    26 cm. 
 - National Center for Health Statistics. Vital and health statistics. Series 11: Data from the National Health Survey. Data from the health e xamination survey ;    no. 101 .
<br/><br/>Includes bibliographical references: p. 15. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Visual acuity -- United States -- Statistics.<br/> Children with visual disabilities -- United States -- Statistics.
<br/><br/><label>Subjects--Geographic Terms: </label><br/> United States -- Statistics, Medical.
<br/><br/><label>Dewey Class. No.: </label>312.0973 ROB