Operational definitions for year 2000 objectives : priority area 20, immunization and infectious diseases / Colleen Ryan, Susan Schober, and Kathleen Turczyn. [electronic resource]
Imprint
[Hyattsville, Md.] (6525 Belcrest Rd., Hyattsville 20782) : [U.S. Dept. of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Center for Health Statistics, 1997]
