@book{90247,
	author = {Almanza Serrano, Ma. Guadalupe.},
	title = {Phytophthora infestans (Mont.) y virus x de la papa :},
	publisher = {El autor,},
	year = {2005.},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/101777.pdf}
}