Colmenares, J. Humberto. <br/><br/>
Adoption of hybrid seed and fertilizers among colombian corn growers :  abridged by CIMMY 
/por J. Humberto Colmenares 
 - México :  CIMMYT,  1975 
 - 29 p. 
<br/><br/><label>LCCN: </label>22198 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Maíz--Híbridos.<br/>Maíz--Semilla.