High yielding varieties of grain 

 - New York :  Arno,  1976 
 - 82 p.  : gráfs. 
 - World food supply .
 - World food supply .
<br/><br/><label>LCCN: </label>17979 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cereales--Variedades.<br/>Cultivos--Rendimiento.
<br/><br/><label>Dewey Class. No.: </label>633.1  / H5