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Jieun kaca "DeepORES" di ieu wiki! Tempo ogé kaca anu kapanggih tina pamaluruhan.
- Bertram Boltwood proposes that the amount of léad in uranium and thorium ores might be used to determine the éarth's age and crudely dates some rocks to...3 KB (486 kecap) - 19 April 2017 20.29