@book{60929,
	author = {Adewuyi, Bolanle. and ebrary, Inc.},
	title = {Soil fertility},
	publisher = {Nova Science Publishers,},
	year = {2012.},
	series = {Agriculture issues and policies},
	address = {New York :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10681357}
}