Suggested Topics within your search.
Suggested Topics within your search.
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by Kent, Bion H. (Bion Huntley), 1925-, Schweinfurth, Stanley P., Roen, John B.
Harrisburg, Pa. : Pennsylvania Topographic and Geologic Survey, 1969
Harrisburg, Pa. : Pennsylvania Topographic and Geologic Survey, 1969
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Government Document
Book
5
by Newhall, Christopher G.
Washington : Denver, CO : U.S. G.P.O. ; For sale by the Books and Open-File Reports Section, U.S. Geological Survey, 1988
Washington : Denver, CO : U.S. G.P.O. ; For sale by the Books and Open-File Reports Section, U.S. Geological Survey, 1988
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Government Document
Book
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by Epstein, Jack Burton, 1935-
Harrisburg, Pa. : Pennsylvania Bureau of Topographic and Geologic Survey, 1974
Harrisburg, Pa. : Pennsylvania Bureau of Topographic and Geologic Survey, 1974
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Government Document
Book
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by Southworth, Scott, 1957-
Washington, DC : U.S. G.P.O., 1985
Washington, DC : U.S. G.P.O., 1985
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Government Document
Book
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by Lohman, S. W. (Stanley William), 1907-1992
Harrisburg : Pa. Dept. of Internal Affairs, Topographic and Geologic Survey, 1937
Harrisburg : Pa. Dept. of Internal Affairs, Topographic and Geologic Survey, 1937
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Government Document
Book
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by Wagner, Walter Richard, 1928-1974
Harrisburg : Pennsylvania Geological Survey, 1976
Harrisburg : Pennsylvania Geological Survey, 1976
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Book
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by Kent, Bion H. (Bion Huntley), 1925-
Harrisburg : Pennsylvania Geological Survey : May be purchased from State Book Store, 1974
Harrisburg : Pennsylvania Geological Survey : May be purchased from State Book Store, 1974
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Book
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by Lohman, S. W. (Stanley William), 1907-1992
Harrisburg, Pa. : Dept. of Internal Affairs, Topographic and Geologic Survey, 1939
Harrisburg, Pa. : Dept. of Internal Affairs, Topographic and Geologic Survey, 1939
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Book