U.S. Department of Health, Education, and Welfare, Public Health Service, Health Resources Administration, National Center for Health Statistics : For sale by the Supt. of Docs., U.S. G.P.O.,
The National Ambulatory Medical Care Survey, ... summary, United States.
National Ambulatory Medical Care Survey, ... summary
1973- : DHEW publication ;
<1975->: DHEW publication ;
<1979-1991>: DHHS publication ;
Ambulatory care visits to physician offices, hospital outpatient departments, and emergency departments, United States
Vital and health statistics. Series 13, Data from the National Health Survey.
DHEW publication ;
DHHS publication ;