@book{60773,
	author = {El-Zemrany, H. M.  and El-Shinnawi, M. M.},
	title = {Evaluation of certain local bacterial strains as diazotrophs for wheat plants},
	url = {http://nile.enal.sci.eg/EALE/2015/MJAR/4015/1/P2/263.pdf}
}