Journal of the Southern African Institute of Mining and Metallurgy On-line version ISSN 2411-9717Print version ISSN 2225-6253
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LIU, X.; LI, L. and YANG, Y..Development status of coal mining in China. J. S. Afr. Inst. Min. Metall. [online]. 2023, vol.123, n.1, pp.19-28.
ISSN 2411-9717.