@book{165475,
	author = {I. Bachtold Gómez, Ernesto, autor II. Alonso Pesado, Francisco Alejandro, coaut. III. Aguilar Valdés, Alfredo, coaut.},
	title = {Economía zootécnica  /},
	publisher = {Limusa,},
	year = {1989},
	address = {México  :},
	edition = {2a ed.}
}