@book{5910,
	author = {World Health Organization. Office of Global and Integrated Environmental Health.},
	title = {Health and environment library modules : water quality, water supply and sanitation = Modules documentaires sante environnement : qualite de l'eau, approvisionnement en eau et assainissement.},
	publisher = {World Health Organization,},
	year = {1997.},
	address = {Geneva : }
}