Petrology and reservoir characteristics of the Lower Silurian Medina Group sandstones, Athens and Geneva fields, Crawford County, Pennsylvania /

by Laughrey, Christopher D.
Harrisburg : Pennsylvania Geological Survey, 1984

Petrology and reservoir characteristics of the Lower Silurian Medina Group sandstones, Athens and Geneva fields, Crawford County, Pennsylvania /

by Laughrey, Christopher D.
Harrisburg : Pennsylvania Geological Survey, 1984

Petrology and reservoir characteristics of the Lower Silurian Medina Group sandstones, Athens and Geneva fields, Crawford County, Pennsylvania /

by Laughrey, Christopher D.
Harrisburg : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Office of Resources Management, Bureau of Topographic and Geologic Survey : Copies purchased from State Book Store, 1984

Petrology and reservoir characteristics of the Lower Silurian Medina Group sandstones, Athens and Geneva fields, Crawford County, Pennsylvania /

by Laughrey, Christopher D.
Harrisburg, Pa. : Commonwealth of Pennsylvania [Dept. of Environmental Resources, Office of Resources Management, Bureau of Topographic and Geologic Survey] : Copies purchased from State Book Store, 1984

Petrology and reservoir characteristics of the Lower Silurian Medina Group sandstones, Athens and Geneva fields, Crawford County, Pennsylvania /

by Laughrey, Christopher D.
Harrisburg : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Office of Resources Management, Bureau of Topographic and Geologic Survey : Copies purchased from State Book Store, 1984

Geology of the oil and gas fields of southwestern Pennsylvania /

by Harper, John A.
Harrisburg : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Office of Resources Management, Bureau of Topographic and Geologic Survey : May be purchased from State Book Store, 1987

Geology of the oil and gas fields of Southwestern Pennsylvania /

by Harper, John A.
Harrisburg : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Office of Resources Management, Bureau of Topographic and Geologic Survey, 1987

Oil and gas fields of Pennsylvania 1982 /

by Harper, John A.
[Harrisburg?] : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Office of Resources Management, Bureau of Topographic and Geologic Survey, 1982

Oil and gas fields of Pennsylvania : 1982 /

by Harper, John A.
[Harrisburg?] : Commonwealth of Pennsylvania, Department of Environmental Resources, Office of Resources Management, Bureau of Topographic and Geologic Survey, 1982

Oil and gas fields of Pennsylvania : 1982 /

by Harper, John A.
[Harrisburg?] : Commonwealth of Pennsylvania, Department of Environmental Resources, Office of Resources Management, Bureau of Topographic and Geologic Survey, 1982

Oil and gas fields of Pennsylvania : 1982 /

by Harper, John A.
[Harrisburg? Pa.] : Pennsylvania, Bureau of Topographic and Geologic Survey, 1982

Oil and gas fields of Pennsylvania /

by Harper, J. A.
[Harrisburg] : The Bureau, 1982

Trenton and Black River carbonates in the Union Furnace area of Blair and Huntingdon counties, Pennsylvania : field trip guidebook, Pittsburgh Assiciation [sic] of Petroleum Geolog...

Pittsburgh, PA : Pennsylvania Geological Survey, 2004

Cambrian and Ordovician rocks of the Birmingham area, Blair and Huntingdon counties, Pennsylvania : guidebook for the Pittsburgh Geological Society field trip, Saturday, May 4, 199...

Pittsburgh, PA : Pittsburgh Geological Society, 1996

Oil and gas fields of Pennsylvania

[Harrisburg] : Pennsylvania Department of Environmental Resources, Bureau of Topographic and Geologic Survey, 1982

Oil and gas fields of Pennsylvania /

[Harrisburg] : Pennsylvania Department of Environmental Resources, Bureau of Topographic and Geologic Survey, 1982

Oil and gas fields of Pennsylvania : 1982 /

[Harrisburg?] : Commonwealth of Pennsylvania, Department of Environmental Resources, Office of Resources Management, Bureau of Topographic and Geologic Survey, 1982