@book{3311,
	author = {Arana Gutierrez, Heriberto.},
	title = {Praderas de invierno},
	publisher = {Universidad Autónoma de Chihuahua. Facultad de Zootecnia,},
	year = {[198?]},
	series = {Manual del campesino},
	address = {Chihuahua, Chih. :},
	note = {D49-125}
}