@book{167631,
	author = {Swine Information Service},
	title = {Your hog management guide  /},
	publisher = {National Hog Farmer,},
	year = {1979},
	address = {s.l.  :},
	note = {Contenido : artículos importantes que han aparecido en The National Hog Farmer. Swine Information Service Bulletins Fotocopía}
}