Perera, W.S. <br/><br/>
The Study on the Impact of Informal Groups on Principal's Instructional Role: (Relavant to the Selected Five Schools in Panadura Division) 

 - Maharagama 
 - 79p. 
<br/><br/>
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education Management<br/>PGDEM<br/>Role of the Pincipal