@book{3066,
	author = {AFRC Institute of Arable Crops Research. Harpenden, Hertfordshire, England},
	title = {Report},
	publisher = {AFRC Institute of Arable Crops Research,},
	year = {1988-199 .},
	address = {Harpenden, Hertfordshire :},
	note = {c. de Rothamsted Experimental Station. Harpenden, Herts, England,}
}