Aitken, I. D. Diseases of sheep / I.D. Aitken - 4th ed. - Ames. Iowa : Blackwell, 2007 - 610 p. : ilus. ISBN: 978-1-4051-3414-9 LCCN: 168616 Subjects--Topical Terms: Ganado lanar--Enfermedades Dewey Class. No.: 636.30896 A5 2007