National Geologic Map Database
General Information
- Title: The Ashland coal field, Rosebud, Powder River, and Custer Counties, Montana
- Author(s): Bass, N.W.
- Publishing Organization: U.S. Geological Survey
- Series and Number: Bulletin 831-B
- Larger Work: Contributions to economic geology (short papers and preliminary reports) 1931-32, part II - mineral fuels
- Publication Date: 1932
- Map Scale: 1:62,500
- Cross Section: None
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