Harris J, Hawthorne J, Oosterveld M, Wehmeyer E. Regularities in the characteristics of South African diamonds. IKC abstracts [Internet]. 1973 Aug. 13 [cited 2024 Oct. 31];1:151-4. Available from: https://journals.library.ualberta.ca/ikcabstracts.com/index.php/ikc/article/view/871