Geology of anthracite in the southern part of the Trevorton Quadrangle, Northumberland County, Pennsylvania /
| Main Author: | |
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| Other Authors: | , |
| Format: | Map |
| Language: | English |
| Published: |
Washington :
U.S. Geological Survey,
1963.
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| Series: | Coal investigations ;
Map C-48. |
| Subjects: |
| Item Description: | "Topographic contour interval 20 feet." "Structural contour interval 100 feet." Topography from aerial photographs taken 1943 and 1951 and revised 1952. Cartographic material. |
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| Physical Description: | 2 color maps. ; 39 x 88 cm. |
| Bibliography: | Includes index maps, columnar section, 6 cross sections, text and bibliography. |