A study of the efficiency of VAT revenue collection in the Department of Inland Revenue 
Jayaratne, C.D.S. 
 -  2006. 
 - ix,55p.: 
<br/><br/> Ruwanchandra, K.D.S., & Kottachchi, D.B. 
<br/><br/><label>Gov. Doc. Class. No.: </label>MPM/T/14