Electric arc welding. 

 - [London]:   Her Majesty’s stationery office,   [1968].  
 - 35 p. :  ill. ;  22 cm. 
 -  38 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arc welding
<br/><br/><label>Dewey Class. No.: </label>671.5212