@book{15772,
	author = {Afaf Ahmed Ahmed Ismail Gabr and A. Medhat Alnaggar , },
	title = {Breeding for downy mildew disease resistance in maize / },
	publisher = {Afaf Ahmed Ahmed Ismail Gabr , },
	year = {1997},
	address = {Cairo : },
	url = {http://172.23.153.220/th.pdf}
}