Search for: [Abstract = "Flints contain from 0,15 to 0,36% of total organic carbon and trace amount of metals such as manganese, strontium, titanium and zinc. Presumably, investigated flints may origin from Jurassic and\/or Cretaceous carbonate formations occurring in the North\-Western parts of Poland or in the region due north from polish coast line \(bottom of the Baltic Sea\)."]

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