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Maps showing outcrop, structure contours, cross sections, and isopachs of Partings-Mammoth coal bed, Paleocene Tongue River Member of the Fort Union Formation, Bull Mountain coal field, south-central Montana
Maps showing outcrop, structure contours, cross sections, and isopachs of Partings-Mammoth coal bed, Paleocene Tongue River Member of the Fort Union Formation, Bull Mountain coal field, south-central Montana