2004 - How the Cows Turned Mad Unlocking the Mysteries of Mad Cow Disease (Paperback) ISBN-13: 9780520243378 ISBN-10: 0520243374 Genres: Science & Math, Medicine, Engineering & Transportation, Medical Books 1 2003 - How the Cows Turned Mad (Hardcover) ISBN-13: 9780520235311 ISBN-10: 0520235312 Genres: Science & Math, Medicine, Engineering & Transportation, Medical Books 1 |