@article {20555,
	title = {Biodiversity of diazotrophs associated to the plant cover of north Sinai deserts},
	journal = {Archives of Agronomy and Soil Science},
	volume = {49},
	year = {2003},
	pages = {683-705},
	author = {Amal A. Othman and Wafaa M. Amer and M. Fayez and M Monib and N. A. Hegazi}
}
