Szukana fraza: [Abstrakt = "The physicochemical investigation of different archaeological samples are important in exploring the human past. Non\-invasive spectroscopic methods, like Fourier transform infrared spectroscopy \(FT\-IR\), are useful diagnostic tool, used to identify unknown adhesive substances deposited on artifacts \(e.g. vessels, utensils or tools\). As the results of analysis of black residues on selected artifacts from Wroclaw pitch, wood tar and wine have been identified"]

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