Descripción
Publicado:Vol. 38, no. S-5 (June 16, 1989)-v. 38, no. S-9 (Dec. 29, 1989) ; [new ser.], v. 39, no. RR-1 (Jan. 26, 1990)-
Notas:Title from cover.
No longer distributed to depository libraries in a physical format, <2000->
Published: U.S. Dept. of Health and Human Services, Center for Disease Control and Prevention, Epidemiology Program Office, <2001->
Frecuencia de Publicación:Irregular
ISSN:1545-8601
1057-5987