Instructor's manual 

 - Miami  AWS  [s.f.]. 
 - 73 p. y 156 diap. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>SOLDADURA<br/>WELDING<br/>QUALITY ASSURANCE
<br/><br/><label>Universal Decimal Class. No.: </label>669: 621.791