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2. The fluidised combustion of low-grade materials;Cooke,1975
3. The Colloid Chemistry of Silica and Silicates;Iler,1955
4. Methods for producing alumina from clay - An evaluation of a nitric acid process;Johnson;U.S. Bur. Mines, Rep. Invest.,1964
5. The use of coal spoils as feed materials for alumina recovery by acid leaching routes. 1. The suitability and variability of the feed materials;Livingston;Hydrometallurgy,1983