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https://www.academia.edu/41012637/The_Hoard_of_Rodotopi_in_Ioannina_Epirus_NW_Greece_and_t…

…none of the three samples was tin traced. 47 Junghans et al. 1968, 248 f. (nos. 8845–8847). 48 Chernykh 1978, 146 f. These also are artefacts made of pure copper or mainly of a copper-arsenic alloy. 49 Junghans et al. 1968, 262 f. (nos. 9333–9336). 50 Suitable/optimal percentage …

https://www.academia.edu/80815118/CONSIGLIO_NAZIONALE_RICERCHE_ISTITUTO_AMBIENTE_MARINO_CO…

…. The peaks on the seismographs (indicated as A in fig. 28) are produced by shot events during the experiment. Random seismic noise (indicated as B in fig. 28) is probably due to gas activity in the area. Figure 26: 5.2 BATHYMETRY A surface of approximately 290 km2 was investigated…