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PENNSYLVANIA RESOURCES
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Pennsylvania Topographic
and Geologic Survey: P.O. Box 8453 Harrisburg, PA 17105-8453
(717) 787-2169, Web Site: http://www.dcnr.state.pa.us/
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Shultz, Charles H., ed., 1999,
The Geology of Pennsylvania, Pennsylvania Geological
Survey and Pittsburg Geological Society: Harrisburg, Pennsylvania.
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Van Diver, Bradford B., 1990,
Roadside Geology of Pennsylvania, Mountain Press Publishing
Company: Missoula, Montana.
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Delaware Valley Earth Science
Society (field trips and fossil collecting): www.dvess.org
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Barns, John H., 1991, Rocks
and Minerals of Pennsylvania, Educational Series 1, Pennsylvania
Geological Survey: Harrisburg, Pennsylvania.
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Barns, John H., and W. D. Sevon.
1996, The Geological story of Pennsylvania, Educational
Series #4, Pennsylvania Geological Survey: Harrisburg, Pennsylvania.
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Goodwin, B.K., 1964, Guidebook
to the Geology of the Philadelphia Area, Bulletin G. 41,
p. 18. Pennsylvania Geological Survey: Harrisburg, Pennsylvania.
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Harper, John A., Donald M.
Hoskins, and Jon D. Inners, 1983, Fossil Collecting in Pennsylvania,
Pennsylvania Geological Survey: Harrisburg, Pennsylvania.
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Kochanov, William E., 1999,
Sinkholes in Pennsylvania, Educational Series 11, Pennsylvania
Geological Survey: Harrisburg, Pennsylvania.
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Sevon, W.D. and Gary M. Fleeger,
1999, Pennsylvania and the Ice Age, Educational Series
6, Pennsylvania Geological Survey: Harrisburg, Pennsylvania.
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Subitzkey, Semour, ed., 1969,
Geology of Selected Areas in New Jersey and Eastern Pennsylvania.
Rutgers University Press: New Brunswick, New Jersey.
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Sharnberger, Charles K., 1989,
Earthquakes Hazard in Pennsylvania, Educational Series
10, Pennsylvania Geological Survey: Harrisburg, PA.
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