@book{4867,
	author = {Symposium on Nitrogen Management in Farming Systems in Humid and Subhumid Tropics},
	title = {Nitrogen management in farming systems in humid and subhumid tropics /},
	publisher = {Institute for Soil Fertility ;},
	year = {1985.},
	address = {Haren, The Netherlands :},
	note = {"Proceedings of Symposium on Nitrogen Management in Farming Systems in Humid and Subhumid Tropics, held at the International Institute of Tropical Agriculture (I.I.T.A.), Ibadan, Nigeria , October 23-26, 1984"--T.p. verso.}
}