Geringer G. Differentiation in the upper mantle deduced from minerals found in the kimberlite of the Roberts Victor Mine in the Boshof-Dealesville area. IKC abstracts [Internet]. 1973 Aug. 13 [cited 2024 May 4];1:123-5. Available from: https://ikcabstracts.com/index.php/ikc/article/view/864