@book{1268,
	author = {Singh , Gurcharan and Jagdish, Singh},
	title = {Water supply and sanitary engineering,},
	publisher = {Standard Pub.,},
	year = {c2003.[Reprinted 2011,2009,2007, 1996]},
	address = {Delhi :},
	edition = {4th ed.},
	note = {Includes index.}
}