Title
Patterns of ambulatory care in obstetrics and gynecology : the national ambulatory medical care survey, United States, January 1980-December 1981.
Published
Hyattsville, Md. : U.S. Dept. of Health and Human Services, Public Health Service, National Center for Health Statistics ; Washington, D.C. : For sale by the Supt. of Docs., U.S. G.P.O., 1984.