Briggs, D.  1936- <br/><br/>
Plant variation and evolution / 
by D. Briggs and S. M. Walters 
 - London :  Weidenfeld & Nicolson,  c1969 
 - 256 p. :  ill. (some col.), facsims, maps ;  20 cm. 
 - World university library .
<br/><br/>Bibliography: p. 240-252 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plants--Variation<br/>Evolution
<br/><br/><label>Dewey Class. No.: </label>581.15