1.
Ginebra; Organización Mundial de la Salud; 1965. 202 p. (Cuadernos de Salud Púbica (OMS), 24).
Monography
in Spanish
| PAHO
| ID: pah-42358
2.
Geneva; World Health Organization; 1964. 189 p. (Public Health Papers (WHO), 24).
Monography
in English
| PAHO
| ID: pah-42300