Wellappili,A.R <br/><br/>
අ.පො.ස උසස් පෙළ ඉන්ජිනේරු තාක්ෂණවේදය   

 - Educational Publications Department  Baththaramulla  2018 
 - 94p  1 
 - 2023-11-21 
<br/><br/><label>ISBN: </label>978-955-25-0475-4 
<br/><br/><label>Nat. Bib. No.: </label>0008083 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>DEP 
<br/><br/><label>Universal Decimal Class. No.: </label>627