Nowak, Ronald M. Walker’s mammals of the world. / byRonald M. Nowak. - 5th ed. - Baltimore : Johns Hopkins University Press, 1991. - 2 v. x, 1629 p. : ill. ; 26 cm. ISBN: 080183970X Subjects--Topical Terms: Mammals; Mammals --Classification. Dewey Class. No.: 599 NOW-v2