A study on the effectiveness of foreign training  for the staff officers in the environment sector public institutions 
Abeydheera, M.K.K.R. 
 -  2009. 
 - x,83p.: 
<br/><br/> Wijekoon, W.M.M.G.D., & Medagama, S. 
<br/><br/><label>Gov. Doc. Class. No.: </label>MPM/T/76