@book{58286,
	author = {Smithcors, J. F.},
	title = {Progress in cattle and sheep practice},
	publisher = {American Veterinary,},
	year = {1969},
	series = {Modern veterinary reference series},
	address = {Wheaton, Ill. :},
	note = {La biblioteca tiene : v.2 Nutrition ; mastitis ; reproduction ; herd health}
}