1979. U.S. Government Printing. Softback. Book-VG. 11x8.5. 30pp. 1 b/w plate, many b/w illus.
The Mississippian and Pennsylvanian (Carboniferous) systems in the United States--Massachusetts, Rhode Island, and Maine
by United States. Geological Survey, James William Skehan, Massachusetts. Dept. of Public Works
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