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Abrahamsen N Sigurdsson T and Frandsen J Magnetic and Georadar Surveying
Bollingberg H J and Lund Hansen U Trace Element Studies by DC ARCLaser
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Abrahamsen alloys amount analyses ancient anomalies appears applied archaeological bismuth bone bronze buildings central Europe clay compared composition contain copper cubit curve dating Denmark detection determined direction distance distribution elements et al experiment extracted field Figure filter foot given groove groups higher hoards human hybridization important indicate iron kilns known laser layer lead length limestone lower magnetic major mass Maßstab material means measured ment metal method natural object obtained organic original paint pattern period pictograph pigment placed plasma position possible present probably probe problem procedure produced profiles radiographs range recorded reference relative rock sample seen sherd shows SIMS soil sound steps stone structures surface survey Table technique tion trace elements types units University values variation