Nombre de page : 0

Date de publication : 30-11--0001

Edition : Non défini

Auteur : ired.org

Type : Ouvrages

Theme :

"Approximately one in three rural water supply systems in developing countries does not function at all or is performing well below its expected level. Failure on this scale represents hundreds of millions of dollars in wasted investment and millions of people who have had to return to fetching dirty drinking water from distant sources - to the detriment of their health, education, and livelihoods......"\r\n\r\n"Source bulletin no 63 - March 2011"\r\n\r\ndd