Marsh, Helene Ecology and Conservation of the Sirenia Dugongs and Manatees / [electronic resource] : Helene Marsh, Thomas J. O'Shea, John E. Reynolds III. - Cambridge : The University Press, 2011 - 1 online resource (536 p.) Includes bibliographic references and index ISBN: 9781139013277 (ebook) Subjects--Topical Terms: Sirenia.