Barbier, Edward B. Elephants, economics and Ivory / Edward B. Barbier & Timothy M. Swanson - London : Earthscan Publications , 1990 - xii, 154p. ; 20 cm. Includes bibliographical references and index. Subjects--Topical Terms: EconomicsElephantsAfricaIvory Coast Dewey Class. No.: 330 / BAR