Sprague, George Frederick <br/><br/>
Corn and corn improvement 

 - 2 ed. 
 - Madison, Wis. :  American Society of Agronomy,  1977 
 - 774 p.  : ilus. 
 - Agronomy  ; 18 .
 - Agronomy  ; 18 .
<br/><br/><label>LCCN: </label>57543 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Maíz.<br/>Maíz--Mejoramiento.
<br/><br/><label>Dewey Class. No.: </label>633.15  / S67 1977