@book{69259,
	author = {International Symposium on Nitrogen Fixation with Non - Legumes ( and Skinner, Frederic Arthur.},
	title = {Nitrogen fixation with non-legumes},
	publisher = {Martinus Nijhoff,},
	year = {1986},
	series = {Developments in plant and soil sciences},
	address = {Dorcrecht :},
	note = {33-162}
}