Author: Hall, A. and G. Molengraaff.
Title: The Vredefort mountain land in the Southern Transvaal and the Northern Orange Free State.
Description: Amsterdam, Verh. der Koninklijke Akademie van Wetenschappen, 1925. 194p., 39 plates and 1 folded coloured geological map. H.calf. In good condition. = Dedicated by one of the authors to his wife.

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