Niels Roling <br/><br/>
Extension science : Information systems in agricultural development 

 - Cambridge  Cambridge University Press  1988 
 - 233p 
<br/><br/>Niels Roling: Extension science : Information systems in agricultural development.  Cambridge.  Cambridge University Press, 1988. 0-521-34437-9--(630.715ROL)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>ISBN: </label>0-521-34437-9 
<br/><br/><label>Dewey Class. No.: </label>630.715  / ROL