Dressler, Robert L.,  1927-, <br/><br/>
The orchids :  natural history and classification / 
Robert L. Dressler. 
 - Cambridge, Mass. :  Harvard University Press,  1981. 
 - 332 pages. :  illustrations. ;  25 cm. 
<br/><br/>Bibliography : p. (283)-301. 
<br/><br/><label>ISBN: </label>0674875257  hardcovers 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Orchids.<br/>Orchids--Classification.