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1956
Walker, Frederick. "The Dolerites of the Cape Peninsula." Transactions of the Geological Society of South Africa 77 (1956): 77-92.
Walker, Frederick. "The Dolerites of the Cape Peninsula." Transactions of the Geological Society of South Africa 77 (1956): 77-92.
1930
Daly, Reginald A., and Tom F. W. Barth. "Dolerites Associated with the Karroo System, South Africa." Geological Magazine 67, no. 789 (1930): 97-110.