Visual acuity of children, United States / [by Jean Roberts and K enneth R. Duyan]
Material type:
TextSeries: 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. 101Publication details: Washington : U.S. Health Services and Mental Health Administratio n, 1970.Description: iv, 35 p. : illus. ; 26 cmSubject(s): DDC classification: - 312.0973 ROB
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Includes bibliographical references: p. 15.
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