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1
Bedrock geologic map, coal-resource maps, and digital datasets of the Kersey quadrangle, Elk and Clearfield counties, Pennsylvania /
por Dodge, Clifford H.
[Harrisburg: Pennsylvania Geological Survey, 2005

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Documento Governamental Livro
2
Geology and mineral resources of the Ramey and Houtzdale quadrangles, Clearfield and Centre counties, Pennsylvania /
Harrisburg : Commonwealth of Pennsylvania, Department of Environmental Resources, Bureau of Topographic and Geologic Survey, 1977

Livro
4
Sediment loads, discharges, and yields in the East Branch Mahoning Creek Basin, Clearfield and Jefferson counties, Pennsylvania, June 1979 through September 1981 /
por Loper, Connie A.
Harrisburg, Pa. : Denver, Colo. : Dept. of the Interior, U.S. Geological Survey ; U.S. Geological Survey, Books and Open-File Reports Section [distributor], 1988

Documento Governamental Livro
5
Geology and mineral resources of the Hazen, Falls Creek, Reynoldsville, and Dubois quadrangles, Clearfield and Jefferson Counties, Pennsylvania /
por Glover, Albert D., Bragonier, William A.
Harrisburg : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey, 1978

Livro
6
Geology and mineral resources of the southern half of the Clearfield 15-minute quadrangle, Pennsylvania /
por Glover, Albert D.
Harrisburg : [Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey], 1970

Livro
7
Geology and mineral resources of the Sabula and Penfield quadrangles, Clearfield, Elk, and Jefferson Counties, Pennsylvania /
por Berg, Thomas M., Glover, Albert D.
Harrisburg : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey, 1976

Livro
8
Geology and mineral resources of the Philipsburg 7 1/2-minute quadrangle, Pennsylvania /
por Glass, Gary B.
Harrisburg : [Commonwealth of Pennsylvania, Department of Environmental Resources, Bureau of Topographic and Geologic Survey], 1974

Livro
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