@book{174180,
	author = {Yang, Xiaoyi. and ebrary, Inc.},
	title = {Potential of activated sludge utilization},
	publisher = {Nova Science Publishers,},
	year = {c2010.},
	series = {Environmental science, engineering and technology series},
	address = {New York :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10680938}
}