HUGHES HAROLD D. <br/><br/>
CROP PRODUCTION 

 - NEW YORK   LONDON  1972 
 - xi/627 
<br/><br/><label>LC Class. No.: </label>631.5/HUG  / 1 
<br/><br/><label>Dewey Class. No.: </label>631.5/HUG  / 1