Evenson, Robert E. <br/><br/>
Agricultural research and productivity / 
Robert E. Evenson and Yoav Kislev. 
 - New Haven :  Yale University Press,  1975. 
 - xi, 204 p. :  ill. ; 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0300018150 :  0300018770 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture--Research--Economic aspects--Mathematical models.<br/>Agriculture--Economic aspects--Mathematical models.
<br/><br/><label>LC Class. No.: </label>S540.A2  / E9