Hubert, E.H.  <br/><br/>
Manual of Electric ARC Welding. 

 - 1a ed, 7ma impr 
 - New York :   McGraw-Hill,   1936. 
 - p. 163 
<br/><br/><label>Subjects--Topical Terms: </label><br/>SOLDADURA<br/>EQUIPOS<br/>METODOS<br/>EXPANSION<br/>CONTRACCION
<br/><br/><label>Universal Decimal Class. No.: </label>621.79