Search Results for the EPA National Library Catalog

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The economic geology of the Upper Freeport coal in the New Stanton area of Westmoreland County, Pennsylvania : a model for coal exploration / 1979
The geological story of Pennsylvania / 1996
The geology of Pennsylvania / 1999
The geology of Pennsylvania's groundwater / 1999
The high calcium limestones of the Annville belt in Lebanon and Berks Counties, Pennsylvania / 1952
The occurrence of brine in western Pennsylvania / 1962
The Oriskany sandstone in the subsurface of Pennsylvania / 1981
The petroleum industry and the future petroleum province in Pennsylvania, 1970 / 1970
The Precambrian geology of the Reading 15' quadrangle / 1962
The Precambrian in the subsurface of northwestern Pennsylvania and adjoining areas / 1968
The Shenango Formation (Mississippian) in northwestern Pennsylvania / 1970
Topographic and geologic atlas of Pennsylvania. 0
Upper Devonian stratigraphy and sedimentary environments in northeastern Pennsylvania / 1974
Uranium in Pennsylvania / 1961
Your guide to the geology of the Kings Gap Area, Cumberland County, Pennsylvania / 1986
Zinc and lead occurrences in Pennsylvania / 1977
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