Search Results for the EPA National Library Catalog

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Your Search: (SUBJECT=Geology Pennsylvania Pittsburgh region Maps)

 
 
 

Select Item Title Year Published
Greater Pittsburgh region geologic map. 1975
Greater Pittsburgh region maps of mined-out areas and thickness of rock over the Pittsburgh coal / 1975
Greater Pittsburgh region: Structure contour ma of Allegheny, Armstrong, Beaver, Butler, Washington, and Westmoreland Counties. 1975

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