Toolbox talks 

 - කොළඹ  හොල්සිම් ලංකා සමාගම 
 - iv, 72 p.  Colour illustration 
<br/><br/><label>Subjects--Topical Terms: </label><br/>BOOKS BOX B1634<br/>ENGINEERING<br/>TECHNOLOGY
<br/><br/><label>Dewey Class. No.: </label>B1634  / LDC