1- 4 sur 4

	Cholera and the Big Stink  film video internet - 2014 - 28 mn Ed. BBC - London
	The sewage treatment process  film video internet - 2009 - 3 mn Ed. Severn Trent Water - Coventry
	The water treatment process  film video internet - 2009 - 3 mn Ed. Severn Trent Water - Coventry
	Water supply and sanitation by country  site internet Ed. Wikipédia -

1 - 4 sur 4