Coal resources of Butler County, Pennsylvania /
| Main Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
Harrisburg :
Pennsylvania Geological Survey,
1985-
|
| Series: | Mineral resource report ;
90, pt.1. |
| Subjects: |
| Item Description: | Pt. 1 consists chiefly of topographic maps. "Fourth series." Loose leaf. |
|---|---|
| Physical Description: | volumes : maps (some color) ; 28 cm. |
| Bibliography: | Includes bibliographies. |