@book{221644,
	author = {Eriksen, F. I. and Whitney, A. S.},
	title = {Effects of light intensity on growth of tome tropical forage species : interaction of light intensity and nitrogen fertilization on six forage grasses / F. I. Eriksen ; A. S. Whitney},
	publisher = {American Society of Agronomy},
	year = {1981},
	address = {Madison},
	note = {Separata de Agronomy Journal v. 73, may-june 1981.}
}