Evenson, R. E.  <br/><br/>
Crop variety improvement and its effect on productivity  the impact of international agricultural research 

 - UK  CABI Publishing  2003 
 - xxv,522p.  24cm 
<br/><br/><label>ISBN: </label>0851995497 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cultivation and harvesting<br/>Agriculture<br/>Specific techniques, apparatus, equipment, materials
<br/><br/><label>Dewey Class. No.: </label>631.52  / CRO