Sheehan, Thomas John. <br/><br/>
An illustrated survey of orchid genera 

 - Rev. ed. 
 - Portland, Oregon :  Timber,  1994 
 - 421 p.  : ilus. 
<br/><br/> Ed. rev. de Orchid genera illustrated 
<br/><br/><label>LCCN: </label>59628 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Orquidáceas.
<br/><br/><label>Dewey Class. No.: </label>584.15  / S44 1994