Gas tungsten arc welding :  expert / 
3G E-Learning. 
 -  3G E-Learning LLC,  c2016.  
 - vii, 348 p. :  color illustrations. 
<br/><br/>Includes index.  
<br/><br/>
<br/><br/><label>ISBN: </label>9789351158493 
<br/><br/><label>Dewey Class. No.: </label>671.522 G21 2016