@proceedings {22505,
	title = {Mixed cultivation and inoculation of various genera of associative diazotrophs.},
	journal = {The Sixth International Symposium on Nitrogen Fixation With Non-Legumes. },
	year = {1994},
	pages = {319-326},
	publisher = {The American University in Cairo Press},
	address = {Cairo, Egypt},
	author = {M.  A. Hamza and H. Youssef and A. Helmy and G.  A.  Amin and M. Fayez and A. Higazy and H.  M. El-Khawas and M Monib and M. Z. Sedik and N. A. Hegazi}
}
