00624nam 2200157z- 450 9910712748803321(CKB)5470000002496685(EXLCZ)99547000000249668520230509c1977uuuu -u- -engHospital and surgical insurance coverage, United States-1974U.S. Department of Health, Education, and Welfare, Public Health Service, Health Resources Administration, National Center for Health StatisticsHyattsville, MdBOOK9910712748803321Hospital and surgical insurance coverage, United States-19743351015UNINA