Hansen Richard and Stahl Friedrich <br/><br/>
Perennials and their garden habitats 

 - 4th 
 - London  Cambridge university press  1993 
 - xii,450p.; ill.  Hbk 
<br/><br/><label>ISBN: </label>0521351944 
<br/><br/><label>LC Class. No.: </label>SB434.H3 1993