Roger Kirkby <br/><br/>
On farm research methods : Comparative approch : experience of the quimiag penipe project ecuador 

 - New York  Department of Plant Breeding & Biometrics Cornell University  1981 
 - 29p 
<br/><br/><br/>ENGLISH 
<br/><br/><label>Dewey Class. No.: </label>338.10186  / KIR