00750nam 2200169z- 450 9910712341903321(CKB)5470000002492714(EXLCZ)99547000000249271420230509c1978uuuu -u- -engOffice visits to internists : the National Ambulatory Medical Care Survey, United States, 1975U.S. Department of Health, Education, and Welfare, Public Health Service, Office of the Assistant Secretary for Health, National Center for Health StatisticsHyattsville, MdOffice visits to internists BOOK9910712341903321Office visits to internists : the National Ambulatory Medical Care Survey, United States, 19753302722UNINA