De Costa, Shahen <br/><br/>
ජල ඉංජිනේරු විද්‍යාව 
 Jala enjineru vidyava 

 - Colombo  S.Godage   2000 
 - 286p.,  22 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water  resources engineering <br/>Hydrology
<br/><br/><label>Universal Decimal Class. No.: </label>63  / DER