@book{14050,
	author = {Long Ashton Symposium and Landsberg, J. J.},
	title = {Environmental effects on crop physiology :},
	publisher = {Academic Press,},
	year = {c1977 [Printing 1981].},
	address = {London ;},
	note = {At head of title: Fifth Long Ashton Symposium 1975.}
}