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by Quinby, Jane, 1901-
[Pittsburgh?] : R.M.M. Hunt, 1951
[Pittsburgh?] : R.M.M. Hunt, 1951
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Book
4
Reston, Va.? : U.S. Dept. of the Interior, 1988
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Book
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by Wolf, Edwin, 1911-1991
Philadelphia : American Philosophical Society/Library Co. of Philadelphia, 2006
Philadelphia : American Philosophical Society/Library Co. of Philadelphia, 2006
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Book
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by Cramer, Howard Ross, 1925-
Harrisburg, [Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey] 1972
Harrisburg, [Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey] 1972
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Book
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by Ashley, Geo. H. (George Hall), 1866-1951
Harrisburg, Pa. : Pennsylvania Bureau of Topographic and Geologic Survey, 1931
Harrisburg, Pa. : Pennsylvania Bureau of Topographic and Geologic Survey, 1931
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Government Document
Book
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by Cramer, Howard Ross, 1925-
Harrisburg : Dept. of Internal Affairs, Bureau of Topographic and Geologic Survey; [for sale by the Division of Documents, Bureau of Publications], 1965
Harrisburg : Dept. of Internal Affairs, Bureau of Topographic and Geologic Survey; [for sale by the Division of Documents, Bureau of Publications], 1965
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Book