1.
Wkly. epidemiol. rec
; 65(41): 318-320, 1990.
Article
in English
| AIM (Africa)
| ID: biblio-1273639
2.
Releve epidemiologique hebdomadaire
; 65(41): 318-320, 1990.
Article
in French
| AIM (Africa)
| ID: biblio-1268931