An encyclopedia of Shade Perennials 

 - Portland  Cambridge  2002 
 -  ill.  374p.:  29cm. 
<br/><br/><label>ISBN: </label>0-88192-549-7 
<br/><br/><label>Subjects--Topical Terms: </label>
<br/><br/><label>LC Class. No.: </label>REF SB434.E53 2002