Amarasekara,D <br/><br/>
Samaja vidyawe mulika sankalpa 

 - 7th 
 - Varakapola  Ariya pubilshers  2008 
 - 130 p ., 
<br/><br/> principles of Social Science 
<br/><br/><label>ISBN: </label>9555530017 
<br/><br/><label>Dewey Class. No.: </label>301  / AMA