@book{154,
	author = {Fair, Gordon Maskew and Geyer, John CharlesOkun,Daniel Alexander},
	title = {Water and wastewater engineering, volume 1 : Water supply and wastewater removal},
	publisher = {John Wiley & Sons.Inc},
	year = {1991},
	address = {New York},
	edition = {19th . Ed.}
}