Owen-Smith, R. Norman. Adaptive herbivore ecology : from resources to populations in variable environments / R. Norman Owen-Smith. - Student ed. - Johannesburg : Wits University Press, c2002. - xvi, 374 p. ; 23 cm. Includes index. Includes bibliographical references. ISBN: 1868144275 (pbk.) Subjects--Topical Terms: Ungulates--Ecology.Herbivores--Ecology.