Sprague, George Frederick. <br/><br/>
The development of hybrid corn technolgy in the United States and selected countries 

 - Washington :  Agency for International Development,  1975 
 - 81 p. 
 - Agriculture technology for developing countries. Technical series bulletin  ; 16 .
 - Agriculture technology for developing countries. Technical series bulletin  ; 16 .
<br/><br/><label>LCCN: </label>57544 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Maíz--Híbridos.<br/>Maíz--Mejoramiento.<br/>Maíz--Proteínas.