"Opatha, H.H.D." <br/><br/>
සේවා මණ්ඩල කළමනාකරණය/ 
H.H.D.Opatha 
 - Nugegoda:  "Author,"  1995 
 - 361p. 
<br/><br/><label>Subjects--Index Terms: </label>human resources management 
<br/><br/><label>Dewey Class. No.: </label>658  / OPA