Butler, H. E. J.  <br/><br/>
Electric resistance welding :  a practical guide to spot, seam, projection and butt welding methods / 
H. E. J. Butler. 
 - London :  George Newnes,  c 1950. 
 - 182 p. :  ill. ;  23 cm. 
<br/><br/> Includes index. 
<br/><br/>315  315 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Metalworking & primary metal products.
<br/><br/><label>Dewey Class. No.: </label>671.521 / B977e