1.
Ginebra; Organización Mundial de la Salud; 1998.
in Chinese, English, French, Russian, Spanish
| WHO IRIS
| ID: who-42108
2.
Ginebra; Organizacion Mundial de la Salud; 1997. 122 p. ilus.
Monography
in Spanish
| PAHO
| ID: pah-27275
3.
Genève; Organisation mondiale de la Santé; 1997.
in Chinese, English, French, Russian, Spanish
| WHO IRIS
| ID: who-41983
4.
Geneva; World Health Organization; 1996. 111 p. ilus.
Monography
in English
| PAHO
| ID: pah-23599
5.
Geneva; World Health Organization; 1996.
in English, Chinese, French, Russian, Spanish
| WHO IRIS
| ID: who-41879