@book{165001,
	author = {Pérez Bibriesca, M. Teresa and Ordaz Salinas, J. Carlos},
	title = {Caracterización socioeconómica del sistema cría de becerros en Balleza, Chihuahua  /},
	publisher = {El autor,},
	year = {1996},
	address = {Chapingo, Méx.  :}
}