Tizard, Ian R. Veterinary immunology : an introduction / Ian Tizard. - 3rd ed. - Philadelphia : Saunders, 1987. - xviii, 401 p. : ill. ISBN: 0721620981 (pbk.) Subjects--Topical Terms: Veterinary immunology. LC Class. No.: SF757.2 / .T59 1987 Dewey Class. No.: 636.089/6079�19