Ayensu, Edward S. Commercial timbers of West Africa / Edward S. Ayensu and Albert Bentum - City of Washington : Smithsonian Institution Press, 1974 - iii, 69 p. : ill. ; 27 cm. - Smithsonian contributions to botany ; 14 . Subjects--Topical Terms: Timber--Africa, WestTrees--Africa, WestWood