龙潭组 1. Duanpiqiao Mining AreaLongtan FormationDepositional Environment and Coal Accumulation Characteristics,Shaoyang,Hunan; 湖南邵阳短陂桥矿区龙潭组沉积环境及聚煤特征 2. Upper Permian SeriesLongtan FormationNo.27 Coal Seam
龙潭组 1. Duanpiqiao Mining AreaLongtan FormationDepositional Environment and Coal Accumulation Characteristics,Shaoyang,Hunan; 湖南邵阳短陂桥矿区龙潭组沉积环境及聚煤特征 2. Upper Permian SeriesLongtan FormationNo.27 Coal Seam Coal-accumulating Pattern in Guizhou Province; ...