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Eye care visits and use of eyeglasses or contact lenses, United States, 1979 and 1980.

Poe, Gail S.
Hyattsville, Md. : U.S. Dept. of Health and Human Services, Public Health Service, National Center for Health Statistics ; Washington, D.C. : For sale by the Supt. of Docs., U.S. G.P.O., 1984. 1984

Optometric manpower : characteristics of optometric practice, United States, 1968

Koch, Hugo K.
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.], [1974] 1974

Optometrists employed in health services, United States, 1968

Mount, Henry S.
Rockville, Md. : U.S. Dept. of Health, Education, and Welfare, Public Health Service, Health Services and Mental Health Administration, National Center for Health Statistics, 1973. 1973