http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Characteristics of persons with corrective lenses, United States--July 1965-June 1966
National Center for Health Statistics (U.S.)
Health Services and Mental Health Administration,
1 online resource (iv, 44 pages) : illustrations.
Characteristics of persons with corrective lenses, United States, July 1965-June 1966