strontium (1) sable (1) nickel (1) musée (1) industrie du verre (1) verre (1) datation (1) analyse des données (1) comparaison (1) cobalt (1) point (1) substance chimique (1) carbonate (1) calcium (1) Canton de Genève (1) Comparison (1) Numismatics (1) History (1) Dating (1) Identification (1) Antiquities, Prehistoric (1) Exploitation (1) Origin (1) Year (1) Variations (1) Strontium (1) Social sciences (1) Seventh century (1) Sand (1) Nickel (1)