@book{141872,
	author = {Stubbart, John M. and American Water Works Association.},
	title = {AWWA water operator field guide},
	publisher = {American Water Works Association,},
	year = {c2004.},
	address = {Denver, Colo. :},
	note = {"Online resources": p. 413-418.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10522373}
}