Health survey procedure : concepts, questionnaire development, and definitions in the health interview survey : concepts of morbidity, disability, and utilization of medical services and facilities, questionnaire development, fiscal years 1958-64; and definitions of terms used in statistical reports
Washington, D.C. : U.S. Dept. of Health, Education, and Welfare, Public Health Service, National Center for Health Statistics : For sale by the Supt. of Docs., U.S. G.P.O., 1964