Gunawardana, A.M.T. Wickramasinghe, M.L. Abeyratne, S. <br/><br/>
Farmers' Knowledge and Perception of Improved Technology 

 - Agrarian Research and Training Institute   Colombo 7, Sri Lanka  1980 
 - 83p.  chart 
 - Research Study No. 34 .
<br/><br/><label>Nat. Bib. No.: </label>5025 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Universal Decimal Class. No.: </label>631.15  / GUN