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1
Geology of the piedmont of southeastern Pennsylvania : guidebook for the 39th Annual Field Conference of Pennsylvania Geologists, October 4-5, 1974.
[Harrisburg, Pa.] : [The Conference] : distributed by Bureau of Topographic and Geologic Survey, Dept. of Environmental Resources, 1974

Conference Proceeding Book
3
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, Inc., 1999

Conference Proceeding Book
4
Applied geology in the Lock Haven and Williamsport Region, Clinton and Lycoming Counties, Northcentral Pennsylvania : Guidebook for the 60th annual Field Conference of Pennsylvania Geologists, October 5,6,7, 1995 /
Harrisburg, PA : Field Conference of Pennsylvania Geologists, Inc., 1995

Conference Proceeding Book
5
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
6
Geology in the region of the Delaware to Lehigh water gaps : guidebook for the 32nd annual Field Conference of Pennsylvania Geologists, September 29 and 30, 1967 [East Stroudsburg, Pa.] /
by Epstein, Jack Burton, 1935-
Harrisburg, Pa. : Bureau of Topographic and Geologic Survey, Dept. of Environmental Resources, 1967

Conference Proceeding Book
7
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
8
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
9
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
10
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
11
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
12
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
13
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
14
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
15
Cyclic sedimentation in the carboniferous of western Pennsylvania.
State College, Pa. : Pennsylvania State University, 1964

Conference Proceeding Book
16
The geology of mineral deposits in south-central Pennsylvania.
Harrisburg, Pa. : Bureau of Topographic and Geologic Survey, 1968

Conference Proceeding Book
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