3 1 40 YOUNG, J. Z. Additional Author mixed material Oxford Oxford at the Clarendom Press 1957 The_Life_of_Mammals.jpg Their Anatomy and Physiology YOUNG, J. Z. Additional Author HOBBS, M. J. Additional Author mixed material 0198571569 New York Clarendom Press 1975 The_Life_of_Mammals_Their_Anatomy_and_Physiology.jpg YOUNG, J. Z. Additional Author mixed material New York Clarendon Press 1981 The_Life_of_Vertebrates.jpg