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. :  illus. ;  22 cm. 
 - Fundamentals of botany series .
<br/><br/>Includes bibliographical references (p. 121-125). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany--Classification.<br/>plants--Variation.
<br/><br/><label>LC Class. No.: </label>QK97  / B44 1967