Monocular visual acuity of persons 4-74 years, United States, 1971-1972 : visual acuity levels with usual correction, if any, as determined in the op[h]thalmology examination before dilation, by race, geographic region, family income, and other selected demographic variables.
Roberts, Jean,1918-
Ludford, Jacqueline.
National Center for Health Statistics (U.S.)
Rockville, Md. : U.S. Dept. of Health, Education, and Welfare, Public Health Service, Health Resources Administration, National Center for Health Statistics ; Washington, D.C. : For sale by the Supt. of Docs., U.S. G.P.O.,
1977.
Authors: Jean Roberts and Jacqueline Ludford.
"March 1977."
DHEW publication ; no. (HRA) 77-1646.
Stock no. 017-022-00536-1.
Vision
Visual acuity