A study on effectiveness of literacy causing non formal education approach 
Lankananda, R.C. 
 -  2008. 
 - xii,96p.: 
<br/><br/> Amaragunasekara, S.D.L., & Medagama, S. 
<br/><br/><label>Gov. Doc. Class. No.: </label>MPM/T/098