Crop variety improvement and its effect on productivity:  the impact of international agricultural research/ 
edited by R.E. Evenson and D. Gollin. 
 - Wallingford, Oxon, UK ;  Cambridge, MA:  CABI Pub.,  c2003. 
 - xxv,522 p.:  ill.;  25 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0851995497 (alk. paper) 
<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>LC Class. No.: </label>SB185.7  / C76 2003