50 වසර මතක සටහන් = Memories of the past 

 - Colombo  National Institute of Social Development  2003 
 - xxxii, 387p.  22cm. 
<br/><br/><label>ISBN: </label>9558003018 
<br/><br/><label>Subjects--Topical Terms: </label><br/>SOCIAL INTERACTION
<br/><br/><label>Dewey Class. No.: </label>302  / PAN