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1.- FLUID COMPOSITION, DELTA D OF CHANNEL H (SUB 2) O, AND DELTA (SUPER 18) O OF LATTICE OXYGEN IN BERYLS; GENETIC IMPLICATIONS FOR BRAZILIAN, COLOMBIAN, AND AFGHANISTANI EMERALD DEPOSITS
WINSTON & SON; SILVER SPRING, MD; USA; UNITED STATES, 1997
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2.- HISTORIQUE DES GISEMENTS D'EMERAUDE ET IDENTIFICATION DES EMERAUDES ANCIENNES (2EME PARTIE) ;HISTORY OF EMERALD DEPOSITS AND IDENTIFICATION OF OLD EMERALDS; PART 2
ASSOCIATION FRANCAISE DE GEMMOLOGIE; PARIS; FRA; FRANCE, 2000
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3.- LA MISSION FRANCAISE AFG EN COLOMBIE ;THE FRENCH AFG MISSION TO COLOMBIA
ASSOCIATION FRANCAISE DE GEMMOLOGIE; PARIS; FRA; FRANCE, 2000
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