Study of the factors that affect the improvement of performance of field officers in the Divisional secretariat 
Bodimanna, S.P.K. 
 -  2006. 
 - viii,61p.: 
<br/><br/> Gunasinghe, K.A.D., & Amaragunasekara, A.L. 
<br/><br/><label>Gov. Doc. Class. No.: </label>MPM/T/18