National Geologic Map Database
Product Description Page
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Title: Environmental geology, Allegheny County and vicinity, Pennsylvania - description of a program and its results
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Author(s): Briggs, R.P.
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Publishing Organization: U.S. Geological Survey
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Series and Number: Circular 747
- Publication Date: 1977
- Map Scale: 1:364,000
- Cross Section: None
- North Latitude: 40° 40' 1" N (40.6670)
- South Latitude: 40° 11' 24" N (40.1900)
- East Longitude: 79° 41' 46" W (-79.6960)
- West Longitude: 80° 21' 11" W (-80.3530)
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.