A stratigraphic datum, Cisco group (Upper Pennsylvanian), Brazos and Trinity Valleys, north-central Texas.
| Main Author: | |
|---|---|
| Format: | Book |
| Language: | English |
| Published: |
Austin,
Bureau of Economic Geology, University of Texas,
1962.
|
| Series: | Report of investigations (University of Texas. Bureau of Economic Geology) ;
no. 46. |
| Subjects: |