Ewusie Yanney J. Elements of Tropical Ecology/ J. Yanney Ewusie. - London: Heineman Educational Books Ltd, 1980. - xvi, 205 p.: ill, some photos; 24 cm. Includes an Index and Bibliographic references. ISBN: 0435937014 Subjects--Topical Terms: Ecology LC Class. No.: QH 541.5.T7 Ewu