宁武煤田大汉沟矿区晚石炭-早二叠世煤系水文地质特征
저무매전대한구광구만석탄-조이첩세매계수문지질특정
Hydrogeological Characteristics of Coal Measure Strata of Late Carboniferous and Early Permian of Dahangou Mine Area in Ningwu Coalfield
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