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Geology and groundwater resources of Monroe County, Pennsylvania
Louis D. Carswell · Pennsylvania Geological Survey : may be purchased from State Book Store
61 sayfa · 1979
Groundwater / Geology
Geology and hydrology of the Martinsburg formation in Dauphin County, Pennsylvania
Louis D. Carswell · [Bureau of Topographic and Geologic Survey]
54 sayfa · 1968
Geology / Geology, Stratigraphic / Hydrology / Stratigraphic Geology