From South to North : the sand filter takes hold in Canada

Campbell, C.2007-11-132002-03-272007-11-132002http://hdl.handle.net/10625/26246French version available in IDRC Digital Library: Apport du Sud au Nord : les filtres à sable lent adoptés au Canada1 digital fileenDRINKING WATERWATER TREATMENTSANDENGINEERING DESIGNTECHNOLOGY TRANSFERDEVELOPING COUNTRIESCANADAFrom South to North : the sand filter takes hold in CanadaJournal Article