O'Connell, Caitlin, 1965- The elephant's secret sense: the hidden life of the wild herds of Africa / Caitlin O'Connell. - New York, NY : Free Press, c2007. - ix, 240 pages, [8] pages of plates : illustrations ; 24 cm. Includes index. English ISBN: 0743284410 9780743284417 Subjects--Topical Terms: African elephant--Behavior--Namibia.African elephant--Sense organs.--NamibiaAnimal communication--Namibia. Dewey Class. No.: 599.67 / O999e