An analysis on factors affecting the effectiveness of mobitel Bill collection through system in Sri Lanka post 
Hulangamuwa, S.W.M.T.L. 
 -  2016. 
 - x,50p.: 
<br/><br/> Sudasinghe, S.R.S.N. 
<br/><br/><label>Gov. Doc. Class. No.: </label>MPM/T/284