Title: Potassium-argon dating
Subjects: Kalium-Argon-Methode, Methode potassium-argon, Datation par le potassium-argon, Datering, Datation, Argon, Potassium-argon dating, Physikalische Altersbestimmung, Geochronologie, Kalium, Géochronologie, Méthode potassium-argon