Marine Jurassic formations of Montana
| Main Author: | Imlay, Ralph W. 1908-1989. |
|---|---|
| Other Authors: | Geological Survey (U.S.) |
| Format: | Map |
| Language: | English |
| Published: |
[Washington, D.C.] :
U.S. Geological Survey,
1948.
|
| Physical Description: |
1 chart ; sheet 102 x 162 cm. |
| Series: |
Oil and gas investigations preliminary chart ;
32. |
| Subjects: |