Extraction and refining of the rarer metals :  a Symposium on Extraction Metallurgy of Some of the Less Common Metals / 
Institution of Mining and Metallurgy (Great Britain) 
 - London :  The Institute of Mining and Metallurgy,  1957. 
 - xiii, 444 p.  ill. ;  23 cm. 
<br/><br/>Includes bibliographies and index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ore-dressing--Societies, etc.<br/>Rare earth metals--Metallurgy--Congresses.
<br/><br/><label>Dewey Class. No.: </label>622.7  / INE 1957