Independent health insurance plans in the United States, 1961 - Hay, Donald G. (Donald Gordon), 1901- ([Washington] U.S. Dept. of Health, Education, and Welfare, Social Security Administration, Division of Research and Statistics; [for sale by the Superintendent of Documents, U.S. Govt. Print. Off., 1963)
Keywords: Health insurance -- United States -- Statistics; Medical service, Prepayment -- United States -- Research