Williamson, Graham.  BDS <br/><br/>
The orchids of south central Africa/ 
Graham Williamson, R.M. Drummond and R. Grosvenor 
 - London:  J.M. Dent & Sons Ltd.  c1977. 
 - 237p.:  some col. ill.; 
<br/><br/><label>ISBN: </label>0460042955 
<br/><br/><label>Subjects--Topical Terms: </label><br/>plants. South-central Africa. --orchids,
<br/><br/><label>Dewey Class. No.: </label>634.0967