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); Symposium on Extraction Metallurgy of Some of the Less Common Metals (1956 : London) (London : Institution of Mining and Metallurgy, 1957)
Includes bibliographies.
Keywords: Ore-dressing -- Societies, etc; Rare earth metals -- Metallurgy -- Congresses