Geologic processes affecting the quality of the Upper Freeport coal bed, west-central Pennsylvania
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Abstract
Publication type | Report |
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Publication Subtype | USGS Numbered Series |
Title | Geologic processes affecting the quality of the Upper Freeport coal bed, west-central Pennsylvania |
Series title | Open-File Report |
Series number | 86-173 |
DOI | 10.3133/ofr86173 |
Edition | - |
Year Published | 1986 |
Language | ENGLISH |
Publisher | U.S. Geological Survey, |
Description | 22 p. :ill., maps ;28 cm. |
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