@book{201563,
	author = {Liebman, Matt. and Mohler, Charles L., and ebrary, Inc.},
	title = {Ecological management of agricultural weeds},
	publisher = {Cambridge University Press,},
	year = {2001.},
	address = {Cambridge, U.K.},
	url = {http://site.ebrary.com/lib/strathmore/Doc?id=10014991}
}