Extraction metallurgy '81 report of discussion on papers presented at a symposium organized by the Institution of Mining and Metallurgy in collaboration with Gesellschaft Metallhütten- und Berglente, Benelux Métallurgie and Société française de métallurgie and held in London from 21 to 23 September, 1981
Institution of Mining and Metallurgy (Great Britain)
[London] The Institution
[1981?]