Map showing depths to the Pittsburgh coal bed, mining activity, and related surface subsidence, Allegheny, Washington, and Westmoreland counties, Pennsylvania [map] / By Kent O. Bushnell.
Saved in:
| Main Author: | |
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| Corporate Authors: | , |
| Format: | Government Document Map |
| Language: | English |
| Published: |
[Washington, D.C.] :
U.S. Geological Survey,
1975.
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| Series: | Miscellaneous field studies ;
map MF-693-A. |
| Subjects: |
Earth Sciences & Map Library - Maps - South Wall
| Call Number: |
MF-693-A
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| MF-693-A | Available Place a Hold |