1.
World Health Forum (WHO)
; 12(3): 289-96, 1991. graf
Article
in English
| PAHO
| ID: pah-10747
2.
Foro Mundial de la Salud (OMS)
; 12(3): 308-315, 1991.
Article
in Spanish
| PAHO
| ID: pah-12009
3.
Arq. biol. tecnol
; 28(3): 461-5, 1985.
Article
in English
| LILACS
| ID: lil-31365