Hewawaththa,Thissa <br/><br/>
ඉංජිනේරු තාක්ෂණවේදය 1 කොටස  

 - Educational Publications Department   2016 
 - 162p  1 
 - 2023-11-03 
<br/><br/><label>Nat. Bib. No.: </label>0004694 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>HEW 
<br/><br/><label>Universal Decimal Class. No.: </label>620