@book{50426,
	author = {Gerardi, Michael H.},
	title = {Microscopic examination of the activated sludge process /},
	publisher = {Wiley,},
	year = {c2008},
	series = {Wastewater microbiology series},
	address = {Hoboken, N.J. :},
	url = {http://www.loc.gov/catdir/toc/ecip0818/2008021428.html}
}