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2. Rubidium/strontium ages from the western Transvaal;Allsopp;Nature,1964
3. RbSr age measurements on various Swaziland granites;Allsopp;Journal Geophysical Research,1962
4. The geology and geochemistry of the Archæan granites and gneisses of the Johannesburg-Pretoria dome;Anhaeusser;Special Publication Geological Society South Africa,1973
5. Geological and geochemical investigations of the Roodekrans ultramafic complex and surrounding Archæan volcanic rocks, Krugersdorp District;Anhaeusser;Transactions Geological. Society South Africa,1977