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1
by Johnson, Meredith E.
Harrisburg : Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey, 1925
Harrisburg : Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey, 1925
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Book
2
3
4
by Leverett, Frank, 1859-1943
Harrisburg, Pa. : Department of internal affairs, Topographic and geologic survey, 1934
Harrisburg, Pa. : Department of internal affairs, Topographic and geologic survey, 1934
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Book
5
6
by Schaible, Ronald David
1990
1990
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Thesis
Book
7
by Rizzo, George S.
1989
1989
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Thesis
Book
8
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
9
by Wagner, Walter Richard, 1928-1974
Harrisburg : Pennsylvania Geological Survey, 1976
Harrisburg : Pennsylvania Geological Survey, 1976
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Book
10
by Geyer, Alan R.
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
Book
11
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
12
13
by Glass, Gary B.
Harrisburg [Commonwealth of Pennsylvania, Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey] 1974
Harrisburg [Commonwealth of Pennsylvania, Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey] 1974
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Book
14
by Wrigley, Henry E.
Harrisburg, Pub. by the Board of commissioners for the Second geological survey, 1875
Harrisburg, Pub. by the Board of commissioners for the Second geological survey, 1875
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Book
15
by Stone, Ralph W. (Ralph Walter), 1876-1964
Harrisburg, Dept. of internal affairs, Topographic and geologic survey, 1932
Harrisburg, Dept. of internal affairs, Topographic and geologic survey, 1932
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Book
16
by Frazer, Persifor, 1844-1909
Harrisburg : Pub. by the Board of commissioners for the Second geological survey, 1880
Harrisburg : Pub. by the Board of commissioners for the Second geological survey, 1880
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Book
17
18
19
by Butts, Charles, 1863-1946, Moore, Elwood S., 1878-
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1936
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1936
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Government Document
eBook