Gunasena,H.P.M. <br/><br/>
ක්ෂේත්‍ර බෝග නිෂ්පාදනය 
 shesthra Booga Nishpadanaya 

 - Colombo  Gunasena   1987 
 - 624p., 23 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Universal Decimal Class. No.: </label>633  / GUN