@book{73415,
	author = {Carvajal Ezeta, Alejandro.},
	title = {Estudio zootécnico de la ovinocultura en Santo Tomas y San Miguel Ajusco Tlalpan, D.F.},
	publisher = {El autor,},
	year = {1979},
	address = {Toluca, Méx. :}
}