Bell, C. Ritchie <br/><br/>
Plant variation and classification / 
by C. Ritchie Bell ; drawings by Susan Carlton Smith 
 - Belmont, Calif. :  Wadsworth Pub. Co;  1967 
 - vi, 135 p. :  ill. ;  22 cm. 
 - Fundamentals of botany series .
<br/><br/>Bibliography: p. 121-125 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plants--Classification<br/>Plants--Variation
<br/><br/><label>Dewey Class. No.: </label>581.15