[Map of Montana showing oil and gas fields].
| Format: | Map |
|---|---|
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified],
[between 1950 and 1959?]
|
| Subjects: |
| Item Description: | Shows county outlines. Cartographic material. |
|---|---|
| Physical Description: | 1 map ; 49 x 64 cm. |