Coal Fields in Pennsylvania – Low-Volatile Bituminous
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资源简介：
Areas in Pennsylvania that are underlain by Pennsylvanian-age rocks that possibly contain low-volatile bituminous coal. Data scale 1:250,000.
美国宾夕法尼亚州境内下伏有可赋存低挥发性烟煤的宾夕法尼亚纪岩层的区域。本数据集比例尺为1:250000。
创建时间：
2016-02-11
