@book{68088,
	author = {Hance, R. J. and Weed Research Organization.},
	title = {Paraquat persistence-statistical analysis of the W.R.O long term trial},
	publisher = {Weed Research Organization,},
	year = {1985},
	series = {Technical report : 73},
	address = {Oxford :},
	edition = {ed. rev.},
	note = {26-220}
}