Hydrometallurgy '94 : papers presented at the international symposium "Hydrometallurgy '94" organized by the Institution of Mining and Metallurgy and the Society of Chemical Industry, and held in Cambridge, England, from 11 to 15 July, 1994 - Hydrometallurgy '94; Institution of Mining and Metallurgy (Great Britain); Society of Chemical Industry (Great Britain) (Published for the Institution of Mining and Metallurgy and the Society of Chemical Industry by Chapman & Hall, 1994)