1.
Washington, D.C; Organización Panamericana de la Salud; 1996. 45 p.
Monography
in Spanish
| LILACS
| ID: lil-376456
2.
Washington, D.C; Pan Américan Health Organization; 1996. 42 p.
Monography
in English
| LILACS
| ID: lil-376838