Evenson, Robert E. <br/><br/>
Agricultural research and productivity / 
Robert E. Evenson & Yoav Kislev 
 - New Haven :  Yale University Press ,  1975 
 - xi, 204p. :  ill. ;  20 cm.  
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0300018150 0300018770 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural research<br/>Research<br/>Agriculture<br/>Agricultural productivity
<br/><br/><label>Dewey Class. No.: </label>630.72  / EVE