@book{105609,
	author = {Güerere A., Alberto and Hernández Xolocotzi, Efraím.},
	title = {Uso de la tierra en la region de Tuxtepec, Oax :},
	publisher = {Colegio de Postgraduados,},
	year = {1970.},
	address = {Chapingo, Méx :}
}