Benson, Lyman David,  1909-. <br/><br/>
Plant classification / 
Lyman David Benson ; principal plant dissections and illustration by Jerome D. Laudermilk. 
 - Boston :  D. C. Heath,  1959. 
 - 688 p. :  ill. ;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany--Classification.