Orangutan language / Rob Waring, series editor. - Boston, Mass. : Heinle, c2009. - 24 p. : col. ill. ; 21 cm. - Footprint reading library . ISBN: 9781424010998 LCCN: 2009419400 Subjects--Topical Terms: Animal communication.Human-animal communication.Orangutans--Behavior. Dewey Class. No.: 428.6 WAR/O