Suggested Topics within your search.
Suggested Topics within your search.
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by Goodell, Jeff
Boston : Houghton Mifflin Co., 2006
Boston : Houghton Mifflin Co., 2006
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Book
3
by Freese, Barbara (Barbara E.)
Cambridge, MA : Perseus Pub., 2003
Cambridge, MA : Perseus Pub., 2003
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Book
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5
by Roberts, Albert Eugene, 1921-
Washington, U.S. Govt. Print. Off., 1966
Washington, U.S. Govt. Print. Off., 1966
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Government Document
Book
6
by Dodge, Clifford H.
Harrisburg : Pennsylvania Geological Survey, 1984
Harrisburg : Pennsylvania Geological Survey, 1984
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Government Document
Book
7
by Ashmead, Dever C. (Dever Campbell), 1884-
[Harrisburg, Pa.] : Pennsylvania Bureau of Topographic and Geologic Survey, 1926
[Harrisburg, Pa.] : Pennsylvania Bureau of Topographic and Geologic Survey, 1926
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Government Document
Book
8
by Bragonier, William A.
Harrisburg, Pa. : Commonwealth of Pennsylvania, Dept. of Conservation and Natural Resources, Office of Conservation and Engineering Services, Bureau of Topographic and Geologic Survey, 1996
Harrisburg, Pa. : Commonwealth of Pennsylvania, Dept. of Conservation and Natural Resources, Office of Conservation and Engineering Services, Bureau of Topographic and Geologic Survey, 1996
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Map
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by Sisler, James D. (James Donaldson), 1894-
[Harrisburg, Pa.] : Department of Forests and Waters, Topographic and Geologic Survey, 1924
[Harrisburg, Pa.] : Department of Forests and Waters, Topographic and Geologic Survey, 1924
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Book
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by Ash, S. H. (Simon Harry), 1889-
Washington, D.C. : U.S. G.P.O., 1950
Washington, D.C. : U.S. G.P.O., 1950
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Government Document
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15
by Skema, Viktoras W.
Harrisburg, Pa. : Pennsylvania Bureau of Topographic and Geologic Survey, 1982
Harrisburg, Pa. : Pennsylvania Bureau of Topographic and Geologic Survey, 1982
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Government Document
Book
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by Hoffman, John N.
Washington, D.C. : Smithsonian Institution Press, 1972
Washington, D.C. : Smithsonian Institution Press, 1972
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Government Document
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by Stoner, Jeffrey D.
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1987
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1987
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Government Document
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