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1
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
2
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
3
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
4
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
5
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
6
Cyclic sedimentation in the carboniferous of western Pennsylvania.
State College, Pa. : Pennsylvania State University, 1964

Conference Proceeding Book
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