Hurd, Ronald Grahan <br/><br/>
Opportunities for Inceasing Crop Yields / 
by Ronald Grahan Hurd, P.V. Biscoe and C. Dennis. 
 - Boston :   Pitman Advanced,  1980 
 - 410 p. 
<br/><br/><label>LCCN: </label>172361 
<br/><br/><label>Subjects--Personal Names: </label><br/>1.Cultivos-rendimiento/ 2.Plantas-mejoramiento. I.Biscoe,P.V. II. Dennis,C. III.
<br/><br/><label>Dewey Class. No.: </label>631.522 H8