Study on the Motivational Factors affecting Performance of an Executive Public Officer with reference to the Office of the Chief Secretary at Western Province 
Herath, W.H.M.M.G. 
 -  2015. 
 - ix,67p.: 
<br/><br/> Medagama, S., & Nafeel, A.C.M. 
<br/><br/><label>Gov. Doc. Class. No.: </label>MPM/T/348