Hyattsville, Md. : Washington, DC : Dept. of Health & Human Services, Centers for Disease Control and Prevention, National Center for Health Statistics ; For sale by the U.S. G.P.O., Supt. of Docs., 1997
Hyattsville, Md. : Washington, DC : U.S. Dept. of Health and Human Services, Centers for Disease Control and Prevention, National Center for Health Statistics ; For sale by Supt. of Docs., U.S. G.P.O., 1998