Comparison of two vision-testing devices
Subtitle: a study to compare visual acuity as measured by sight-screener and the Sloan letter chart.
Series: Vital and health statistics -- no. 1.; Public Health Service publication -- no. 1000, ser. 2, no. 1.
Publisher: U.S. Dept. of Health, Education, and Welfare, Public Health Service, National Center for Health Statistics
Published: 1963
Place of publication: Washington
Language: eng
Number of pages: 33
Subjects: Vision Tests -- instrumentation.
Notes: Bound with no.1-10 of Vital and health statistics, Series 2.