Hall, A. L., & Molengraaff, G. A. F. (1925). The Vredefort mountain land in the southern Transvaal and the northern Orange Free State. Koninklijke Akademie van Wetenschappen.
Chicago Style (17th ed.) CitationHall, A. L., and G. A. F. Molengraaff. The Vredefort Mountain Land in the Southern Transvaal and the Northern Orange Free State. Amsterdam: Koninklijke Akademie van Wetenschappen, 1925.
MLA citiranjeHall, A. L., and G. A. F. Molengraaff. The Vredefort Mountain Land in the Southern Transvaal and the Northern Orange Free State. Koninklijke Akademie van Wetenschappen, 1925.
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