@book{21892,
	author = {Gran Bretaña. Ministry of Agriculture, Fisheries and Food and Marks, H. F.},
	title = {El cerdo},
	publisher = {Acribia,},
	year = {1973},
	series = {Manual de técnica agropecuaria},
	address = {Zaragoza :},
	note = {Trad. de la 2 ed. en inglés}
}