Bechtel, Helmut <br/><br/>
The Manual of cultivated orchid species  Helmut Bechtel, Phillip Cribb andEdmund Launert. 

 - Poole  Bland ford Press  1980 
 - 444p., 30cm. 
<br/><br/><label>ISBN: </label>0-7137-1097-7. 
<br/><br/><label>Dewey Class. No.: </label>635.934,  / B38M