1.
Washington, D.C; Organización Panamericana de la Salud; 1998. 101 p. ilus.
Monography
in Spanish
| LILACS
| ID: lil-379050
2.
Washington, D.C; Pan Américan Health Organization. División of Health Systems and Services Development; 1998. 93 p. ilus.
Monography
in English
| LILACS
| ID: lil-379112