@book{94504,
	author = {Younie, D. and Wilkinson, J.M.},
	title = {Ganadería ecológica :},
	publisher = {Acribia,},
	year = {2004},
	address = {Zaragoza :},
	note = {Trad de : Organic livestock farming : principles, practicalities and profits, c2001.}
}