National Geologic Map Database
Product Description Page
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Title: The Keyser limestone and Helderberg group
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Author(s): Swartz, F.M.
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Publishing Organization: Pennsylvania Geological Survey
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Series and Number: General Geology Report 19 [p. 29-91]
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Larger Work: Willard, Bradford, Swartz, F.M., and Cleaves, A.B., The Devonian of Pennsylvania
- Publication Date: 1939
- Map Scale: 1:4,674,098
- Cross Section: Yes
- North Latitude: 41° 5' 45" N (41.0957)
- South Latitude: 39° 44' 2" N (39.7340)
- East Longitude: 74° 58' 4" W (-74.9678)
- West Longitude: 78° 23' 21" W (-78.3891)
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