00785nam 2200169z- 450 9910712391803321(CKB)5470000002492210(EXLCZ)99547000000249221020230509c1983uuuu -u- -engPatterns of ambulatory care in pediatrics : the National Ambulatory Medical Care Survey, United States, January 1980-December 1981U.S. Department of Health and Human Services, Public Health Service, National Center for Health StatisticsHyattsville, MdPatterns of ambulatory care in pediatrics BOOK9910712391803321Patterns of ambulatory care in pediatrics : the National Ambulatory Medical Care Survey, United States, January 1980-December 19813334717UNINA