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Isopach maps of overburden on the Pittsburgh coal bed in southwestern Pennsylvania and northern West Virginia
- Source :
- Open-File Report.
- Publication Year :
- 1974
- Publisher :
- US Geological Survey, 1974.
Details
- ISSN :
- 23311258
- Database :
- OpenAIRE
- Journal :
- Open-File Report
- Accession number :
- edsair.doi...........9dc6011080d307b41cc8ba63ce79c2bb
- Full Text :
- https://doi.org/10.3133/ofr74132