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DISTRIBUTION OF ALKALI METALS AND THALLIUM IN SOME SOUTH-WEST AFRICAN GRANITES.SIEDNER G.1968; GEOCHIM. COSMOCHIM. ACTA; GBR; 1968(12), VOL. 32, NUM. 0012, P. 1303 A 1315Miscellaneous

STRUCTURE AND EVOLUTION OF THE PARESIS IGNEOUS COMPLEX,SOUTH WEST AFRICA.SIEDNER G.1965; TRANS. PROC. GEOL. SOC. S. AFR; ZAF; 1965, VOL. 68, P. 178 A 200Miscellaneous

AGE OF THE PARESIS COMPLEX,SOUTH-WEST AFRICA.MANTON WI; SIEDNER G.1967; NATURE.-G.B.; 1967(12), VOL. 216, NUM. 5121, P. 1197 A 1198Miscellaneous

K-AR AGE DETERMINATIONS ON BASALTIC ROCKS FROM SOUTH-WEST AFRICA AND THEIR BEARING ON CONTINENTAL DRIFT.SIEDNER G; MILLER JA.1968; EARTH PLANET. SCI. LETTERS; NLD; 1968(8), VOL. 4, NUM. 0006, P. 451 A 458Miscellaneous

EPISODIC MESOZOIC VOLCANISM IN NAMIBIA AND BRAZIL: A K-AR ISOCHRON STUDY BEARING ON THE OPENING OF THE SOUTH ATLANTIC.SIEDNER G; MITCHELL JG.1976; ABSTR. GEOCHRONOL. ISOTOPE GEOL.; BELG.; 1976, NUM. 0019, P. 1Serial Issue

RADIOMETRIC DATING OF THE UBEIDIYA FORMATION, JORDAN VALLEY, ISRAELHOROWITZ A; SIEDNER G; BAR YOSEF O et al.1973; NATURE; G.B. ; 1973, VOL. 242, NUM. 5394, P. 186 A 187Serial Issue