NG, E. <br/><br/>
Simulation of Growth and Yield of the Potato Crop. 

 - California.  Pudoc Wageningen.  2000 
 - 147p. 
<br/><br/><label>ISBN: </label>90 220 0843 6 
<br/><br/><label>Dewey Class. No.: </label>633.491