LAWRENCE, Willliam J C. <br/><br/>
Plant Breeding : The institute of biology's studies in biology no. 12. 

 - London.  Edward Arnold.  1968 
 - 56p. 
<br/><br/><label>ISBN: </label>0 7131 2205 6 
<br/><br/><label>Dewey Class. No.: </label>581.16