Briggs, D.  1936- <br/><br/>
Plant variation and evolution 
D. Briggs, S.M. Walters 
 - 2nd ed. 
 - Cambridge  Cambridge University Press  1984 
 - 412p. ill. 24cm. 
<br/><br/>Bibliography: p.366-399 Includes index 
<br/><br/><label>ISBN: </label>0521276659  pbk 
<br/><br/><label>LCCN: </label>83-14310 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany--Variation<br/>Plants--Evolution