@book{97864,
	author = {León González, Mario Alberto.},
	title = {Control químico de la cenicilla del rosal ( Sphaerotheca pannosa var. rosa) en Villa Guerrero, México /},
	publisher = {El autor,},
	year = {2010.},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/109521.pdf}
}