A study of the effectiveness of awareness programme conducted by the taxpayer service unit 
Manchanayaka, R.M.R.W. 
 -  2008. 
 - viii,60p.: 
<br/><br/> Wijekoon, W.M.M.G.D., & Jayasundara, W.A. 
<br/><br/><label>Gov. Doc. Class. No.: </label>MPM/T/60