Suggested Topics within your search.
Suggested Topics within your search.
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by MacLachlan, David B.
Harrisburg, Pa., Bureau of Topographic and Geologic Survey, Dept. of Internal Affairs, 1966
Harrisburg, Pa., Bureau of Topographic and Geologic Survey, Dept. of Internal Affairs, 1966
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Conference Proceeding
Book
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by Gold, David P.
[Harrisburg, Pennsylvania?] : [Field Conference of Pennsylvania Geologists], 2017
[Harrisburg, Pennsylvania?] : [Field Conference of Pennsylvania Geologists], 2017
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Conference Proceeding
Book
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by Nickelsen, Richard P.
Harrisburg, PA : Distributed by Field Conference of Pennsylvania Geologists, 1983
Harrisburg, PA : Distributed by Field Conference of Pennsylvania Geologists, 1983
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Conference Proceeding
Book
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by Wise, D. U. (Donald U.)
Lancaster, PA : Pennsylvania Geological Survey, 2010
Lancaster, PA : Pennsylvania Geological Survey, 2010
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Conference Proceeding
Book