John, K.C...[et. al.]. <br/><br/>
Farmers participation in agricultural research and extention systems 

 - New Delhi  Concept publishing   1997 
 - 271p. 
<br/><br/><label>ISBN: </label>8170226171 
<br/><br/><label>Dewey Class. No.: </label>630.7  / JOH