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1
Harrisburg : Board of Commissioners for the Geological Survey, 1892

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Book
2
by Heyman, Louis
Harrisburg [Pennsylvania Topographic and Geologic Survey], 1977

Book
4
Boulder, Colo. : Geological Society of America, 2001

Book
5
Boulder, Colo. : Geological Society of America, 1997

Book
6
Boulder, Colo. : Geological Society of America, 1990

Book
7
by McKinney, Frank K. (Frank Kenneth)
New York : Columbia University Press, 2007

Book
8
Boulder, CO : Geological Society of America, 1999

Book
9
Boulder, Colo. : Geological Society of America, 2004

Book
10
Boulder, Colo. : Geological Society of America, 2002

Conference Proceeding Book
11
Boulder, Colo. : Geological Society of America, 1996

Book