@book{331922,
	author = {Gerardi, Michael H.},
	title = {Settleability problems and loss of solids in the activated sludge process /},
	publisher = {Wiley-Interscience,},
	year = {c2002.},
	address = {New York :},
	note = {P.B},
	url = {http://www.loc.gov/catdir/bios/wiley044/2002028852.html}
}