Wanigaratne, R. D. <br/><br/>
The study of communication flow in selected villages in Sri Lanka  Duwa Kahapathwilagama Nadu Odai Ussan 

 - Agrarian Research and Training Institute  Colombo  1978 
 - 64p.  table 
<br/><br/><label>Nat. Bib. No.: </label>4591 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Universal Decimal Class. No.: </label>631.15  / WAN