Copper for earthing 

 - London  Copper Development Association  1938 
 - 56 p. 
<br/><br/> 	Includes index. 
<br/><br/><label>ISBN: </label>254868 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrial engineering
<br/><br/><label>Dewey Class. No.: </label>621.3  / COP