The Mississippian and Pennsylvanian (Carboniferous) systems in the United States.
| Format: | Government Document Book |
|---|---|
| Language: | English |
| Published: |
Washington :
U.S. Govt. Print. Off. : For sale by the Supt. of Docs,
1979.
|
| Series: | Geological Survey professional paper ;
1110-M-DD. |
| Subjects: |