Coal geology and assessment of coal resources and reserves in the Powder River Basin, Wyoming and Montana /
| Main Author: | |
|---|---|
| Format: | Government Document Book |
| Language: | English |
| Published: |
Reston, Virginia :
U.S. Department of the Interior, U.S. Geological Survey,
2015
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| Series: | Professional paper (Geological Survey (U.S.))
no. 1809 |
| Subjects: |