

@booklet {8364,
	title = {{Evaluation of the Costs and Benefits of Water and Sanitation Improvements at the Global Level}},
	year = {2004},
	publisher = {World Health Organization (WHO)},
	address = {Geneva, Switzerland},
	url = {http://www.who.int/water{\_}sanitation{\_}health/wsh0404.pdf},
	author = {Hutton, G. and Haller, L.}
}
