Williamson, Graham., <br/><br/>
The orchids of South Central Africa / 
Graham Williamson ; with the co-operation of R. B. Drummond and R. Grosvenor. 
 - London :  J. M. Dent & Sons,  1977. 
 - 237 pages. :  illustrations. ;  29 cm. 
<br/><br/>Includes Bibliographical (p.16) 
<br/><br/><label>ISBN: </label>0460042955 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Orchids--Africa, Central