ViljoenMJ&ViljoenRP1969

    Tieteen termipankista

    Viljoen, M.J. & Viljoen, R.P. 1969. The geology and geochemistry of the Lower Ultramafic Unit of the Omverwacht Group and a proposed new class of igneous rocks. In: Upper Mantle Project. Geological Society of South Africa, Special Publication 2, s. 55–85.