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Clifford, TN and Gass IG. (eds). (1970). African Magmatism and Tectonics. Edinburgh: Oliver & Boyd, 1st edition. 461pp. HB. Oliver and Boyd.
Nixon, Peter H. , ed. (1973). Lesotho Kimberlites. Lesotho National Development Corporation. 350pp. + fold out map, ‘Kimberlite and Dolerite Intrusions. Lesotho Gov't..
