prepared for the U.S. Department of Health and Human Services, Public Health Service, Health Resources Administration, Office of Graduate Medical Education ; by Health and Population Study Center, Battelle Human Affairs Research Centers
[Hyattsville, Md.?] : U.S. Dept. of Health and Human Services, Public Health Service, Health Resources Administration ; Washington, D.C. : For sale by the Supt. of Docs., U.S. G.P.O., 1981