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1.- BRAZILIAN KAOLIN PERSPECTIVES SOCIETY FOR MINING, METALLURGY, AND EXPLORATION; LITTLETON, CO; USA; UNITED STATES, 1998 LATIN AMERICAN PERSPECTIVES; EXPLORATION, MINING, AND PROCESSING Ver registro
2.- MINERALOGICAL CHARACTERIZATION OF KAOLIN FROM PRADO, BRAZIL SOCIETY FOR MINING, METALLURGY, AND EXPLORATION; LITTLETON, CO; USA; UNITED STATES, 1997 1998 SME ANNUAL MEETING & EXHIBIT ON LATIN AMERICAN PERSPECTIVES Ver registro
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