Perennials. 

 - Mount Vernon, Va. :  American Horticultural Society,  c1981. 
 - 144 p. :  col. ill. ;  29 cm. 
 - The American Horticultural Society illustrated encyclopedia of gardening .
 - Illustrated encyclopedia of gardening. .
<br/><br/> Includes index. 
<br/><br/><label>LCCN: </label>81071124  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Perennials.
<br/><br/><label>LC Class. No.: </label>SB434  / .P47 1981 
<br/><br/><label>Dewey Class. No.: </label>635.9/32