Extraction metallurgy '81  papers presented at a symposium 
organized by the Institution of Mining and Metallurgy in collaboration with Gesellschaft Deutscher Metallhutten - und Bergleute, Benelux metatturgie and societe francaise de metallurgie and held in London from 21 to 23 September 1981 
 - London  The Institution  1981 
 - 2v. 
<br/><br/>v.2 contains the report of the discussion of the papers. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Metallurgy