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1. Basins: Allegheny County, Pennsylvania

2002. Allegheny County Division of Computer Services Geographic Information Systems Group. 3 Rivers Wet Weather Demonstration Program Outreach Planning Basins.

2. Berea Sandstone Assessment Unit - National Assessment of Oil and Gas Project - Appalachian Basin Province (067) Assessment Units: Pennsylvania

2002. United States Geological Survey (USGS). The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The A...

3. Berea Sandstone Quarter Mile Cells - National Assessment of Oil and Gas Project - Appalachian Basin (067) Quarter-Mile Cells: Pennsylvania

2002. United States Geological Survey (USGS). Cell maps for each oil and gas assessment unit were created by the USGS as a method for illustrating the degree of exploration, type of production,...

4. Blocks: Allegheny County, Pennsylvania

2002. Allegheny County Division of Computer Services Geographic Information Systems Group. Derived from original MAPINDX: Map Index Sheets from Block and Lot Grid of Property Assessment and based on aerial photography, showing 1983 datum ...

5. Catskill Sandstones Siltstones Assessment Unit - National Assessment of Oil and Gas Project - Appalachian Basin Province (067) Assessment Units

2002. United States Geological Survey (USGS). The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The A...

6. Catskill Sandstones Siltstones Assessment Unit Quarter Mile Cells - National Assessment of Oil and Gas Project - Appalachian Basin (067) Quarter-Mile Cells

2002. United States Geological Survey (USGS). Cell maps for each oil and gas assessment unit were created by the USGS as a method for illustrating the degree of exploration, type of production,...

7. Cemeteries: Allegheny County, Pennsylvania

2002. Allegheny County Division of Computer Services Geographic Information Systems Group. Outlines of public and private cemeteries greater than one acre in size. Areas were delineated following a generalized line along the outside edge ...

8. Devonian Siltstone Shale Assessment Unit - National Assessment of Oil and Gas Project - Appalachian Basin Province (067) Assessment Units

2002. United States Geological Survey (USGS). The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The A...

9. Devonian Siltstone Shale Assessment Unit Quarter Mile Cells - National Assessment of Oil and Gas Project - Appalachian Basin (067) Quarter-Mile Cells

2002. United States Geological Survey (USGS). Cell maps for each oil and gas assessment unit were created by the USGS as a method for illustrating the degree of exploration, type of production,...

10. Greater Big Sandy Assessment Unit - National Assessment of Oil and Gas Project - Appalachian Basin (067) Quarter-Mile Cells

2002. United States Geological Survey (USGS). Cell maps for each oil and gas assessment unit were created by the USGS as a method for illustrating the degree of exploration, type of production,...