_:vb1974898 . _:vb1974898 "EN: Source of the measured values: International publications DE: Quelle der Messwerte: Internationale Fachpublikationen Frank Wagner, Elena M\u00FChr-Ebert, Fabian K\u00F6hler, Clemens Walther (2021): Occurrence and spread of geogenic uranium and radium levels in groundwater. Applied Geochemistry (submitted)."@de .