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1.- LIGHT RARE EARTH ELEMENT AND ZINC BEARING CARBONATITE OCCURRENCES NEAR VILLA AHUMADA, CHIHUAHUA, NORTHERN MEXICO
GEOLOGICAL SOCIETY OF AMERICA (GSA); BOULDER, CO; USA; UNITED STATES, 1999
GEOLOGICAL SOCIETY OF AMERICA, 1999 ANNUAL MEETING
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2.- SUPERGENE ENRICHMENT AT CANANEA, SONORA, MEXICO
1997
MEMORIAS TRABAJOS TECNICOS GEOLOGIA MINERIA METALURGIA TEMAS GENERALES DE LA XXII CONVENCION NACIONAL A.I.M.M.G.M., A.C.
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