Suggested Topics within your search.
Suggested Topics within your search.
1
Washington, DC : American Chemical Society, 1986
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Book
2
by Leighton, Henry, 1884-
Harrisburg, Pa. : Dept. of Internal Affairs, Topographic and Geologic Survey, 1959
Harrisburg, Pa. : Dept. of Internal Affairs, Topographic and Geologic Survey, 1959
Government Document
Book
3
4
by McCreath, Andrew S. (Andrew Smith), 1849-, Frazer, Persifor, 1844-1909, Platt, Franklin, 1844-1900, Lesley, J. P. (J. Peter), 1819-1903
Harrisburg : Published by the Board of Commissioners for the Second geological survey, 1879
Harrisburg : Published by the Board of Commissioners for the Second geological survey, 1879
Government Document
Book
5
6
by O'Neill, Bernard J., 1920-
Harrisburg, PA. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1973
Harrisburg, PA. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1973
Government Document
Book
7
by O'Neill, Bernard J., 1920-
Harrisburg [Dept. of Internal Affairs, Bureau of Topographic and Geologic Survey] 1965
Harrisburg [Dept. of Internal Affairs, Bureau of Topographic and Geologic Survey] 1965
Book
8
9
10
11
by Shaw, J. B. (Joseph Bradfield), 1884-
Harrisburg, Pa. : Dept. of Forests and Waters, Topographic and Geologic Survey, 1928
Harrisburg, Pa. : Dept. of Forests and Waters, Topographic and Geologic Survey, 1928
Book
12
by Johnson, Leon Joseph, 1929-
1957
1957
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Thesis
Book
13
by Erickson, Edwin Sylvester, 1928-
1963
1963
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Thesis
Book
14
15
by Weitz, John Hills, 1916-
1954
1954
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Thesis
Book
16
by Fetterman, James William, 1934-
1961
1961
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Thesis
Book
17
by O'Neill, Bernard J., 1920-
Harrisburg : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey, 1979
Harrisburg : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey, 1979
Book
18
by Roen, John B.
Harrisburg : Commonwealth of Pennsylvania, State Planning Board, Bureau of Topographic and Geologic Survey, 1969
Harrisburg : Commonwealth of Pennsylvania, State Planning Board, Bureau of Topographic and Geologic Survey, 1969
Book
19
by Palmer, Bain
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Thesis
Book