Nowak, Ronald M. Walker's mammals of the world/ [electronic resource] / Ronald M. Nowak; John L. Paradiso.. — 4. ed.. 1. — Baltimore, Md. : : Johns Hopkins Univ. Pr.,, 1983.. — XLIV, 568. : : Ill. ISBN: 0801825253 9780801825255 LCCN: 82049056 Dewey Class. No.: 599