By McCaig, Linda F..
Hyattsville, Md. U.S. Dept. of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Center for Health Statistics 1994 .
iv, 78 p. , "July 1994." | "This report describes the methods used in the 1992 National Ambulatory Medical Care Survey. This survey is based on data obtained from the national probability sample of visits to hospital emergency and outpatient departments." 28 cm..
0840604939

By McLemore, Thomas..
Hyattsville, Md. U.S. Dept. of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Center for Health Statistics 1997 .
iv, 124 p. , "October 1997." 28 cm..
0840605323 (pbk. : alk. paper)