1. National ambulatory medical care survey : background and methodology, United States, 1967-72 Author/Creator: Tenney, James B. Publication/Creation: Rockville, Md. : U.S. Dept. of Health, Education, and Welfare, Public Health Service, Health Resources Administration, National Center for Health Statistics, 1974 Resource Type: Book Is Part Of: Vital and health statistics, series 2, nos. 58-65. Access & Availability: Loading