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1.- EXTRACCION DE ALUMINIO DE MENAS ALTERNATIVAS
 MADRID: ASOC. NAC. ING., 1998
X CONGRESO INTERNACIONAL DE MINERIA Y METALURGIA. TOMO 3
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2.- THE LEACHING OF ALUMINUM IN SPANISH CLAYS, COAL MINING WASTES AND COAL FLY ASHES BY SULPHURIC ACID
MINERALS, METALS & MATERIALS SOCIETY; WARRENDALE, PA; USA; UNITED STATES, 1998
LIGHT METALS 1998; PROCEEDINGS OF THE TECHNICAL SESSIONS PRESENTED BY THE TMS ALUMINUM COMMITTEE AT THE TMS ANNUAL MEETING
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