- Title:Rock types of Pennsylvania
- Author(s): Berg, T.M., Sevon, W.D., and Abel, Robin
- Publishing Organization: Pennsylvania Geological Survey
- Series and Number: Map 63
- Publication Date: 1984
- Map Scale: 1:500,000
- Cross Section: None
- North Latitude: 42° 16' 12" N (42.2700)
- South Latitude: 39° 43' 12" N (39.7200)
- East Longitude: 74° 41' 24" W (-74.6900)
- West Longitude: 80° 31' 12" W (-80.5200)
- Publication Format:Digital and Paper
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