L. Clark, Simpson-Hebert, M., and Maiga, F. S.,
“Education sanitaire et hygiene du milieu dans les ecoles de l'Afrique de l'ouest francophone : rapport d'un atelier regional sur les problemes et les possibilites d'amelioration, EIER, Ouagadougou 19-21 avril 1994”. World Health Organization (WHO), Geneva, Switzerland, p. 41, 8 p.: 2 fig., 10 photogr., 1 tab., 1995.
L. Clark, Simpson-Hebert, M., and Maiga, F. S.,
“Hygiene education and environmental sanitation in schools in Francophone West Africa : the report of an inter-country workshop to identify problems and options for improvement, EIER, Ouagadougou 19-21 April 1994”. World Health Organization (WHO), Geneva, Switzerland, p. 35, 8 p.: 2 fig., 10 photogr., 1 tab., 1995.