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1.- A TREATMENT STUDY OF BRAZILIAN GARNETS GEMMOLOGICAL ASSOCIATION AND GEM TESTING LABORATORY OF GREAT BRITAIN; LONDON; GBR; UNITED KINGDOM, 2004 Ver registro
2.- SPECTROSCOPIC STUDIES OF SPESSARTINE FROM BRAZILIAN PEGMATITES MINERALOGICAL SOCIETY OF AMERICA; WASHINGTON, DC; USA; UNITED STATES, 2002 Ver registro
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