Investigations (2) bore (1) puits (1) temps (durée) (1) thallium (1) sélénium (1) fleuve (1) région (1) papier (1) arsenic (1) nickel (1) document (1) méthode (1) cadmium (1) Zircon (1) Villages (1) Trace elements (1) Time (1) Thallium (1) Soils (1) Selenium (1) Rocks (1) Paper (1) Orogeny (1) Nickel (1) Muscovite (1) Gifts (1) Fission track dating (1) Chronology (1) Cadmium (1)