@book{479,
	author = {Kalbermatten, J. M. ; Julius, D. ; Mara, D. D.},
	title = {A planner's guide.},
	publisher = {World Bank,},
	year = {1980.},
	series = {(Appropriate technology for water supply and sanitation ; v. 2)},
	address = {Washington, D.C. : }
}