Lock, « Jwaneng - the untold story of the discovery of the world's richest diamond mine », Journal of the Southern African Institute of Mining and Metallurgy, vol. 119, no 2, , p. 155–164 (ISSN2225-6253, DOI10.17159/2411-9717/2019/v119n2a8, lire en ligne)
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Lock, « Jwaneng - the untold story of the discovery of the world's richest diamond mine », Journal of the Southern African Institute of Mining and Metallurgy, vol. 119, no 2, , p. 155–164 (ISSN2225-6253, DOI10.17159/2411-9717/2019/v119n2a8, lire en ligne)
Lock, « Jwaneng - the untold story of the discovery of the world's richest diamond mine », Journal of the Southern African Institute of Mining and Metallurgy, vol. 119, no 2, , p. 155–164 (ISSN2225-6253, DOI10.17159/2411-9717/2019/v119n2a8, lire en ligne)
