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1.- CHARACTERIZATION OF ALEXANDRITE, EMERALD AND PHENAKITE FROM FRANQUEIRA (NW SPAIN) GEMMOLOGICAL ASSOCIATION AND GEM TESTING LABORATORY OF GREAT BRITIAN; LONDON; GBR; UNITED KINGDOM, 1997 Ver registro
2.- MINERALOGICAL CHARACTERIZATION AND GEMOLOGICAL POSSIBILITIES OF ALEXANDRITE, EMERALD AND PHENAKITE FROM FRANQUEIRA (NW OF SPAIN), THE FIRST SPANISH OCCURRENCE OF THIS MINERAL ASSEMBLAGE INTERNATIONAL MINERALOGICAL ASSOCIATION; [LOCATION VARIES]; III; INTERNATIONAL, 1994 INTERNATIONAL MINERALOGICAL ASSOCIATION, 16TH GENERAL MEETING; ABSTRACTS Ver registro
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