Copper for earthing  
/ CDA  
 - Radlett:   Copper Development Association,   1938 
 - 55p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chemical technology 
<br/><br/><label>Subjects--Index Terms: </label>Electrodes  
<br/><br/><label>Universal Decimal Class. No.: </label>669.3;621.316.99   / G8