Geology and mineral resources of the Blandburg, Tipton, Altoona, and Bellwood quadrangles : Blair, Cambria, Clearfield and Centre counties, Pennsylvania /

by Faill, Rodger T.
Harrisburg, Pa. : Pennsylvania Bureau of Topographic and Geologic Survey, 1989

Geology and mineral resources of the Montoursville south and Muncy quadrangles and part of the Hughesville quadrangle, Lycoming, Northumberland, and Montour counties, Pennsylvania...

by Faill, Rodger T.
Harrisburg : Commonwealth of Pennsylvania, Dept. of Environmental Resources,Bureau of Topographic and Geologic Survey, 1979

Bedrock geology and mineral resources of the Linden and Williamsport quadrangles, Lycoming County, Pennsylvania /

by Faill, Rodger T.
Harrisburg : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey, 1977

Geology and mineral resources of the Salladasburg and Cogan Station quadrangles, Lycoming County, Pennsylvania /

by Faill, Rodger T.
Harrisburg : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey, 1977

Guidebook for the 38th Annual Field COnference of PEnnsylvnaia Geologists : structure and Silurian-Devonian stratigraphy of the Valley and Ridge Province, Central Pennsylvania /

Harrisburg, Pa. : Distributed by Bureau of Topographic and Geologic Survey, Dept. of Environmental Resources, 1973

Geology and mineral resources of the Blandburg, Tipton, Altoona, and Bellwood quadrangles : Blair, Cambria, Clearfield and Centre counties, Pennsylvania /

Harrisburg, Pa. : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Office of Parks and Forestry, Bureau of Topographic and Geologic Survey, 1989

Bedrock geology and mineral resources of the Salladasburg and Cogan Station quadrangles, Lycoming County, Pennsylvania /

by Faill, Rodger T.
Harrisburg, Pa. : Pennsylvania Bureau of Topographic and Geologic Survey, 1977

Earthquake catalog and epicenter map of Pennsylvania

by Faill, Rodger T.
Middletown, PA : Pennsylvania Geological Survey, 2004

Middle Devonian stratigraphy in central Pennsylvania : a revision /

by Faill, Rodger T.
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1978

Earthquake catalog and epicenter map of Pennsylvania /

by Faill, Rodger T.
Middletown, PA : Pennsylvania Geological Survey, 2004

Structure and Silurian-Devonian stratigraphy of the valley and ridge province, central Pennsylvania : guidebook for the 38th Annual Field Conference of Pennsylvania Geologists, Oct...

Harrisburg, Pa. : The Conference : Distributed by Bureau of Topographic and Geologic Survey, Dept. of Environmental Resources, 1973

Structure and Silurian-Devonian stratigraphy of the Valley and Ridge Province, Central Pennsylvania : guidebook for the 38th annual field conference of Pennsylvania geologists, Oct...

Harrisburg, Pa. : Distributed by Bureau of Topographic and Geologic Survey, Dept. of Environmental Resources, 1973

White Clay Creek Preserve, Chester County, Pennsylvania, New Castle County, Delaware : a scenic valley and the arc corner /

by Faill, Rodger T.
[Harrisburg, Pa.] : [Place of publication not identified] : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Office of Parks and Forestry, Bureau of Topographic and Geologic Survey and Bureau of State Parks ; State of Delaware, Delaware Geological Survey and Dept. of Natural Resources and Environmental Control, Division of Parks and Recreation, 1991

Geology and mineral resources of the Montoursville South and Muncy quadrangles and part of the Hughesville quadrangle, Lycoming, Northumberand, and Montour Counties, Pennsylvania /

by Faill, Rodger T.
Harrisburg, Pa. : Commonwealth of Pennsylvania, Dept of Environmental Resources, Bureau of Topographic and Geologic Survey, 1979

Earthquake catalog and epicenter map of Pennsylvania

by Faill, Rodger T.
Middletown, PA : Pennsylvania Geological Survey, 2004

Middle Devonian stratigraphy in central Pennsylvania : a revision /

by Faill, Rodger T., Hoskins, Donald M., Wells, Richard B.
Harrisburg, Pa. : Commonwealth of Pennsylvania [Department of Environmental Resources, Bureau of Topographic and Geological Survey], 1978