Jones, David Alwyn. <br/><br/>
Variation and adaptation in plant species / 
by David A. Jones and Dennis A. Wilkins. 
 - London :  Heinemann Educational,  1971. 
 - vii, 184 p. :  ill., map, plate ;  21 cm. 
<br/><br/>Bibliography: p. 178-181. 
<br/><br/><label>ISBN: </label>0435614800 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany--Variation.<br/>Plants--Adaptation.