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Determination of the Thickness of Waterproof and Security Pillars for Surface Rivers in Funing Lead-Zinc Mine
NIU Shuhui
Journal of Kunming Metallurgy College . 2021, (1): 20 -24 .  DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２１．０１．００４