Keppel, Kenneth G.
Hyattsville, Md. : U.S. Dept. of Health and Human Services, Centers for Disease Control and Prevention, National Center for Health Statistics, [2004]
2004
Kim, Insun.
[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]
1997
Keppel, Kenneth G.
Hyattsville, Md. : Dept. of Health and Human Services, Centers for Disease Control and Prevention, National Center for Health Statistics, [2002]
2002