Hansen,Richard <br/><br/>
Perennials and Their Garden Habitats 

 - German  Cambridge University Press  1993 
<br/><br/><label>ISBN: </label>0-521-35194-4 
<br/><br/><label>LC Class. No.: </label>635.932/HAN  / 1 
<br/><br/><label>Dewey Class. No.: </label>635.932/HAN  / 1