@book{56187,
	author = {Ghallab, A.M. and EI-Ghadban, E.A.E.},
	title = {Reinforcing salt tolerance of marjoram plants by foliar application of putrescine},
	url = {http://nile.enal.sci.eg/EALE/2003/MUJAS/2803/4/2987.pdf}
}