Precious metals / 
edited by R.O. McGachie and A.G. Bradley. 
 - Toronto :  Pergamon ,  1981. 
 - 313 p. :  ill. ;  25 cm. 
<br/><br/> Proceedings of the Fourth International Precious Metals Institute Conference, held in Toronto in June 1980 
<br/><br/><label>ISBN: </label>0080253695 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Precious metals--Congresses.