Begon, Michael. Essentials of ecology / Michael Begon, Robert W. Howarth & Colin R. Townsend. - 4th edition. - 1 volume (various pagings) : col. ill. , col. maps ; 28 cm Includes bibliographical references and index. ISBN: 9780470909133 (pbk : acidfree paper) 0470909137 LCCN: 2015302772 Subjects--Topical Terms: Ecology. Dewey Class. No.: 577 / BEG