@book{238422,
	author = {Giorgi, John. and ebrary, Inc.},
	title = {Math for wastewater treatment operators grades 1 and 2},
	publisher = {American Water Works Association,},
	year = {c2009.},
	address = {Denver, Colo. :},
	edition = {1st ed.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10522365}
}