1.
in French
| WHO IRIS
| ID: who-341569
2.
in French
| WHO IRIS
| ID: who-341568
3.
in French
| WHO IRIS
| ID: who-341562
4.
Ouagadougou; Programme Africain de Lutte contre l'Onchocercose; 2003.
in French
| WHO IRIS
| ID: who-367842