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- [3] PALAEOMAGNETISM AND POTASSIUM-ARGON AGES OF VOLCANIC ROCKS OF NGORONGORO CALDERA, TANZANIA GEOPHYSICAL JOURNAL OF THE ROYAL ASTRONOMICAL SOCIETY, 1971, 22 (01): : 101 - +
- [7] POTASSIUM-ARGON AGES FROM VOLCANIC PROVINCE OF NORTHERN TANZANIA NATURE-PHYSICAL SCIENCE, 1971, 229 (01): : 19 - &
- [10] POTASSIUM-ARGON AGES OF SOME ROCKS FROM THE SOUTH ATLANTIC NATURE, 1960, 187 (4742) : 1019 - 1020