Horton, Douglas E. <br/><br/>
Assessing the impact of international agricultural research and development programs 

<br/><br/> Sobretiro : World Development 14 (4): 453-468, 1986 
<br/><br/><label>LCCN: </label>68130 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultura--Investigación.