මහවැලි පුවත 
 Mahaweli puwatha 

 -  Ministry of Mahaweli  1989 
 - 60p.,iill.,map.,  27 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Irrigation <br/>Hydro power
<br/><br/><label>Universal Decimal Class. No.: </label>(x)626.81  / MAH