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1
Comparative tectonics and stratigraphy of the Cumberland and Lebanon valleys,
by MacLachlan, David B.
Harrisburg, Pa., Bureau of Topographic and Geologic Survey, Dept. of Internal Affairs, 1966

Conference Proceeding Book
2
Guidebook for the ... annual Field Conference of Pennsylvania Geologists.

Conference Proceeding Journal
4
Geology of the Middle Ordovician Martinsburg Formation and related rocks in Pennsylvania : 47th annual field conference of Pennsylvania Geologists, October 1 and 2, 1982 New Cumberland, Pa. /
Harrisburg, PA : Field Conference of Pennsylvania Geologists, c/o Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey, 1982

Conference Proceeding Book
6
Devonian shales in south-central Pennsylvania and Maryland /
by Dennison, John Manley, 1934-
[S.l. : Harrisburgh, Pa. : s.n.] ; distributed by: Field Conference of Pennsylvania Geologists, 1979

Conference Proceeding Book
7
Land use and abuse, the Allegheny County problem : guidebook for the 45th annual field conference of Pennsylvania geologists /
Harrisburg, Pa. : Field Conference of Pennsylvania Geologists, Department of Environmental Resources, Bureau of Topographic and Geologic Survey, 1980

Conference Proceeding Book
8
The Pocono Formation in northeastern Pennsylvania; guidebook for the 34th Annual Field Conference of Pennsylvania Geologists, Oct. 3-4, 1969.
by Sevon, William D.
Harrisburg, Pa., Bureau of Topographical and Geologic Survey, Dept. of Environmental Resources, 1969

Conference Proceeding Book
9
Stratigraphy, sedimentology, and structure of Silurian and Devonian rocks along the Allegheny Front in Bedford County, Pennsylvania, Allegheny County, Maryland, and Mineral and Grant Counties, West Virginia.
Harrisburg, Pa., Bureau of Topographic and Geologic Survey, 1972

Conference Proceeding Book
10
Applied geology in the Lock Haven and Williamsport Region, Clinton and Lycoming Counties, Northcentral Pennsylvania : 60th annual Field Conference of Pennsylvania Geologists, October 5,6,7, 1995 /
Harrisburg, PA : Field Conference of Pennsylvania Geologists, Inc., 1995

Conference Proceeding Book
11
Uranium in Carbon, Lycoming, Sullivan, and Columbia Counties, Pennsylvania : guidebook for the 43rd Annual Field Conference of Pennsylvania Geologists, October 6 and 7, 1978 /
Harrisburg, Pa. : Field Conference of Pennsylvania Geologists, 1978

Conference Proceeding Book
12
Pleistocene and Holocene geology of a dynamic coast : guidebook for the 52nd Annual Field Conference of Pennsylvania Geologists, October 1-3, 1987, Mercyhurst College, Pennsylvania Geological Survey /
Harrisburg, PA : Bureau of Topographic and Geologic Survey, 1987

Conference Proceeding Book
13
Economic & environmental geology and topography in the Allentown-Bethlehem area : Guidebook for the 64th annual Field Conference of Pennsylvania Geologists, September 30-October 2, 1999 /
Harrisburg, PA : Field Conference of Pennsylvania Geologists, 1999

Conference Proceeding Book
14
Silurian depositional history and Alleghanian deformation in the Pennsylvania valley and ridge : guidebook for the 48th Annual Field Conference of Pennsylvania Geologists /
by Nickelsen, Richard P.
Harrisburg, PA : Distributed by Field Conference of Pennsylvania Geologists, 1983

Conference Proceeding Book
15
Structure and Silurian-Devonian stratigraphy of the Valley and Ridge Province, Central Pennsylvania : guidebook for the 38th annual field conference of Pennsylvania geologists, October 5-6, 1973 /
Harrisburg, Pa. : Distributed by Bureau of Topographic and Geologic Survey, Dept. of Environmental Resources, 1973

Conference Proceeding Book
16
Bedrock and glacial geology of northwestern Pennsylvania in Crawford, Forest and Venango counties : 41st annual Field Conference of Pennsylvania Geologists /
Harrisburg : Distributed by Field Conference of Pennsylvania Geologists, Dept. of Environmental Resources, 1976

Conference Proceeding Book
17
New interpretations of eastern Piedmont geology of Maryland; or, Granite and gabbro or graywacke and Greenstone?
Harrisburg, Pa., Baltimore, Bureau of Topographic and Geologic Survey; Maryland Geological Survey, 1970

Conference Proceeding Book
18
The geology of mineral deposits in south-central Pennsylvania.
Harrisburg, Pa. : Bureau of Topographic and Geologic Survey, 1968

Conference Proceeding Book
19
Cyclic sedimentation in the carboniferous of western Pennsylvania.
State College, Pa. : Pennsylvania State University, 1964

Conference Proceeding Book
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