Gadd, John. Modern pig production technology: a practical guide to profit/ - Nottingham; Nottingham university press, 2011. - xvi,596p.:ills,col. Includes bibliographical references and index. 24cm. ISBN: 978-1-907284-47-2 Subjects--Topical Terms: Farm management--Swine--Technological innovations Dewey Class. No.: 636.4