Hay Robert K M <br/><br/>
Introduction to the physiology of crop yield 

 - New York       Longman          1989 
 - 292p.  cm. 
<br/><br/><label>Standard No.: </label>52508 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>J:93, M9