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>IV.—First Report of Progress in the Anthracite Coal Region. The Geology of the Panther Creek Basin, or Eastern End of the Southern Field. By Chas. A. Ashburner. With an Atlas of 13 sheets of Maps and Sections, 6 page Plates, and 2 folded Plates. 8vo. pp. 407. (Harrisburg, 1883.)
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IV.—First Report of Progress in the Anthracite Coal Region. The Geology of the Panther Creek Basin, or Eastern End of the Southern Field. By Chas. A. Ashburner. With an Atlas of 13 sheets of Maps and Sections, 6 page Plates, and 2 folded Plates. 8vo. pp. 407. (Harrisburg, 1883.)
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机译：IV.-第一届烟石煤区进展报告。潘内克盆地的地质，或南方的东端。通过Chas。 A. Ashburner。带有13张地图和部分，6页板和2个折叠板的地图。 8VO。第407页。（哈里斯堡，1883年）
