Introduction to copper. 

 - London :  Copper Development Association,  1957. 
 - 48 p. :  ill. ;  22 cm. 
 - Copper Development Association Publications;  no.52 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Copper.
<br/><br/><label>Dewey Class. No.: </label>P 669.3 C663