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Applicable conditions for a classification system of aquifer-protective mining in hallow coal seams

期刊名字：矿业科学技术（英文版）
文件大小：214kb
论文作者：Liu Yude，Zhang Dongsheng，Fan G
作者单位：China,School of Mines,State Key Laboratory of Coal Resource and Mine Safety,Department of Basic Courses
更新时间：2020-06-12
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Depth limits ot shallow coal seams Aquifer-protective mining Comprehensive class