Benson, Lyman. <br/><br/>
Plant classification / 
Lyman Benson. 
 - Boston :   Heath,  c 1957. 
 - xiv, 688 p. :  ill. ;  24 cm. 
<br/><br/> includes index. 
<br/><br/>342  342 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany.
<br/><br/><label>Dewey Class. No.: </label>581 / B449p