Generation and diffusion of agricultural innovations :  the role of institutional factors / 
edited by Iftikhar Ahmed and Vernon W. Ruttan 
 - Aldershot :  Gower,  1988 
 - xxvii , 471 p. :  ill., ;  23 cm. 
<br/><br/>Includes bibliographies and indexes 
<br/><br/><label>ISBN: </label>0566056798 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural geography