Conservation of the rare plants  edited by B. Simmons, P.E. Brandham and V.T.H. Parry. 

 - New York  Plenum Press  1976 
 - xi, 336p., ill. 25cm. 
<br/><br/><label>ISBN: </label>0-306-32801-1. 
<br/><br/><label>Dewey Class. No.: </label>639.99,  / C55C