2021-8-16 · تعدين اليورانيوم احتياطيات اليورانيوم uranium-thorium dating uranium-lead dating uranium-uranium dating ملاحظات ^ The Chemistry of the Actinide and Transactinide Elements: Third Edition by L.R. Morss, N.M. Edelstein, J. Fuger, eds. (Netherlands: Springer ...