Gunasena, H.P.M. <br/><br/>
කෘෂිකාර්මික මුලධර්ම 
 Krishi kaarmika muladharma 

 - Colombo  M.D. Gunasena   1984 
 - 409p., ill.,  22 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology <br/>Agriculture <br/>Weeds <br/>Water <br/>Plant <br/>Cultivation
<br/><br/><label>Universal Decimal Class. No.: </label>631/635  / GUN