Simmonds, N.W. <br/><br/>
Principles of crop improvement.// 
N.W. Simmonds. 
 - London.  Longman.  1981 
 - xiv, 408p 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant Breeding.
<br/><br/><label>Dewey Class. No.: </label>631.53 SIP