Pathirana,I. <br/><br/>
Kitul karmantaye vartamana tatvaya ha vibavata pilibanda adyanaya 

 - Colombo  HARTI  2014 
 - xii, 93 pages.- 
 - Research report; 59 .
<br/><br/><label>ISBN: </label>9789556121773 
<br/><br/><label>Dewey Class. No.: </label>630  / HEC