1.
Geneva; World Health Organization; 1992. (WHO/DAP/90.10. Unpublished).
in English, French
| WHO IRIS
| ID: who-61685
2.
Genève; Organisation mondiale de la Santé; 1990. (WHO/DAP/90.10. Unpublished).
in English, French
| WHO IRIS
| ID: who-58169