@book{5687,
	author = {Addiscott, T. M. and Powlson, D. S. and Commonwealth Agricultural Bureaux International.},
	title = {Farming, fertilizers and the nitrate problem},
	publisher = {C.A.B. International,},
	year = {1991},
	address = {Wallingford :},
	note = {59-76}
}