Greater Pittsburgh region structure contour map of Allegheny, Armstrong, Beaver, Butler, Washington, and Westmoreland Counties /
- Author(s):
- Pennsylvania. Bureau of Topographic and Geologic Survey.
- Publisher:
- U.S. Geological Survey ;
- Place(s):
- Pennsylvania and Pittsburgh Region
- Subject(s):
- Geology and Geology, Structural
- Year:
- 1975
- Held by:
- MIT
- More details at
- https://mit.primo.exlibrisgroup.com/discovery/fulldisplay?vid=01MIT_INST:MIT&docid=alma990017299900106761