Nelson John <br/><br/>
Information exchange networking for agricultural development  : : a review of concepts and practices. 
/ John Nelson and John Farrington . 
. - Exter  : Technical Centre for Agricultural and Rural Coopération , cop.1994
. - viii-86 p.  : couv. ill. en coul.  ; 28 cm. 
<br/><br/><label>ISBN: </label>9290811137 
<br/><br/><label>Universal Decimal Class. No.: </label>630.