HARRIS, Paul M. <br/><br/>
The potato Crop : The scintific basic for improvement. 

 - 2nd edi. 
 - New York.  Chaman & Hall.  1992 
 - xvii, 909p 
<br/><br/><label>ISBN: </label>0 442 31453 1 
<br/><br/><label>Dewey Class. No.: </label>635.21