FISKENAESSET: RUBINVORKOMMEN AUF GROENLAND = FISKENAESSET: GISEMENTS DE RUBIS DU GROENLANDGUEBELIN EJ.1979; LAPIS; DEU; DA. 1979; VOL. 4; NO 3; PP. 16-26; BIBL. 13 REF.; 11 ILL.Article

FURTHER NOTES ON MONO- AND BI-PHASE INCLUSIONS IN AMETHYST AND TOPAZ.GUEBELIN EJ.1977; J. GEMMOL.; G.B.; DA. 1977; VOL. 15; NO 6; PP. 289-294; 5 ILL.Article

CONTRIBUCION A LA GNMEALOGIA DE LAS INCLUSIONES.GUEBELIN EJ.1969; GEMOLOGIA; ESP; 1969(6), VOL. 1, NUM. 0002, P. 5 A 36Miscellaneous

HELVITE AND TOURMALINE ACCOMPANIED BY GRUNERITE IN QUARTZ.GUEBELIN EJ.1976; J. GEMMOL.; G.B.; 1976, VOL. 15, NUM. 0003, P. 111 A 113Serial Issue

NOTES ON MONO- AND BI-PHASE INCLUSIONS IN AMETHYST.GUEBELIN EJ.1976; J. GEMMOL.; G.B.; DA. 1976; VOL. 15; NO 4; PP. 165-171; BIBL. 1 REF.; 5 ILL.Article

EDELSTEINKUNDLICHES HANDBUCH. = TRAITE DE GEMMOLOGIECHUDOBA KF; GUEBELIN EJ.1974; BONN UILHELM STOLLFUSS,1974, P. 1 A 409Book