1.
Foro mundial de la salud
;
12(4): 497-503, 1991.
Article
in Spanish
| AIM
| ID: biblio-1262075
2.
Forum mond. santé
;
12(4): 533-540, 1991.
Article
in French
| AIM
| ID: biblio-1262120
3.
World health forum
;
12(4): 483-498, 1991.
Article
in English
| AIM
| ID: biblio-1273796