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Helderberg Formation
Columnals (PDF)
Key, M. M., Jr. and N. Potter, Jr. 1992
Chemostratigraphic and U–Pb Geochronologic Constraints on Carbon Cycling Across the Silurian–Devonian Boundary ∗ Jon M
Allegany County
A Geology Field Trip
Report State Geologist Vermont
Highway Rock Cut Inventory and Failure Potential, Allegany County, Maryland
Geologic Assessment of the Burger Power Plant and Surrounding Vicinity for Potential Injection of Carbon Dioxide
A Window to the Appalachians
Paleozoic Species of Bairata and Related Genera
Tectonic and Metamorphic Evolution of the Bernardston Nappe and the Brennan Hill Thrust in the Benardston-Chesterfield Region of the Bronson Hill Anticlinorium
Natural Resources Geology and Mineral Resources
Geology and Mineral Resources of the Southern Half of the Penfield 15-Minute Quadrangle, Pennsylvania
Geology of the West-Central Part of the Southern Anthracite Field and Adjoining Areas, Pennsylvania
Evitts Creek an Pattersons Cree C Quadrangles, M Lryland
Contributions to Virginia Geology
Highway Rock Cut Inventory and Failure Potential, Allegany County, Maryland
An Introduction to Historical Geology, with Special Reference to North
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