Williams, Robert Orchard,    1891 - <br/><br/>
The useful and ornamental plants in Zanzibar and Pemba /    
R. O. Wi lliiams; with an introduction by E. A. T. Dutton 
 - Zanzibar:   [s.n.],   1949 
 - ix,497 p.:    ill. ;    23 cm. 
<br/><br/>  Includes bibliographical  references 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany, Economic----Zanzibar----<br/>Botany ----Pemba----<br/>Botany --------
<br/><br/><label>Dewey Class. No.: </label>581.96781