LEADER 00750nam 2200169z- 450 001 9910712341903321 035 $a(CKB)5470000002492714 035 $a(EXLCZ)995470000002492714 100 $a20230509c1978uuuu -u- - 101 0 $aeng 200 10$aOffice visits to internists : the National Ambulatory Medical Care Survey, United States, 1975 210 $cU.S. Department of Health, Education, and Welfare, Public Health Service, Office of the Assistant Secretary for Health, National Center for Health Statistics$aHyattsville, Md 517 $aOffice visits to internists 906 $aBOOK 912 $a9910712341903321 996 $aOffice visits to internists : the National Ambulatory Medical Care Survey, United States, 1975$93302722 997 $aUNINA