(1968). Advances in extractive metallurgy: Proceedings of a symposium organized by the Institution of Mining and Metallurgy and held in London from 17 to 20 April 1967. London: Institution of Mining and Metallurgy.
Παραπομπή Chicago StyleAdvances in Extractive Metallurgy: Proceedings of a Symposium Organized By the Institution of Mining and Metallurgy and Held in London From 17 to 20 April 1967. London: Institution of Mining and Metallurgy, 1968.
Παραπομπή MLAAdvances in Extractive Metallurgy: Proceedings of a Symposium Organized By the Institution of Mining and Metallurgy and Held in London From 17 to 20 April 1967. London: Institution of Mining and Metallurgy, 1968.
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