Crop variety improvement and its effect on productivity  the impact of international agricultural research /  [electronic resource] : 
edited by R.E. Evenson and D. Gollin. 
 - Wallingford, Oxon, UK ;  Cambridge, MA, USA :  CABI Pub.,  c2003. 
 - xxv, 522 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><br/>Electronic reproduction. <br/>Palo Alto, Calif. : <br/>ebrary, <br/>2009. <br/>Available via World Wide Web. <br/>Access may be limited to ebrary affiliated libraries. 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>Field crops--Breeding.<br/>Field crops--Genetics.<br/>Crop improvement.<br/>Agriculture--Research--International cooperation.<br/>Agricultural productivity.
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Electronic books.
<br/><br/><label>LC Class. No.: </label>SB185.7  / .C76 2003eb 
<br/><br/><label>Dewey Class. No.: </label>631.5/2