@book{6611,
	author = {Solís Aguilar, Humberto. and Flores Valencia, Fernando.},
	title = {Manejo integrado de las enfermedades radicales del manzano, en Zacatlán, Puebla},
	publisher = {El autor,},
	year = {1992},
	address = {Chapingo, Méx. :},
	note = {62-254}
}