Simmonds, N. W.  1922- <br/><br/>
Principles of crop improvement  [electronic resource] / 
N.W. Simmonds, J. Smartt ; with chapter 9 contributed by S. Millam and W. Spoor. 
 - 2nd ed. 
 - Oxford :  Blackwell Science,  1999. 
 - 1 online resource. 
<br/><br/>Includes bibliographical references 
<br/><br/><label>ISBN: </label>9780632041916 9780632060221 (electronic bk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crop improvement.
<br/><br/><label>LC Class. No.: </label>SB106.I47  / S56 1999