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1
by Fettke, Charles R. (Charles Reinhard), 1888-1959
[Harrisburg, Pa.] : Commonwealth of Pennsylvania, Department of Internal Affairs, Topographic and Geologic Survey, 1953
[Harrisburg, Pa.] : Commonwealth of Pennsylvania, Department of Internal Affairs, Topographic and Geologic Survey, 1953
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2
by Flaherty, Kathy J.
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geologic Survey, 2007
2nd ed.
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geologic Survey, 2007
2nd ed.
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3
by Lytle, William S.
[Harrisburg, Pa.] : Commonwealth of Pennsylvania, Dept. of Internal Affairs, Topographic and Geologic Survey, 1959
[Harrisburg, Pa.] : Commonwealth of Pennsylvania, Dept. of Internal Affairs, Topographic and Geologic Survey, 1959
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4
by Lytle, William S.
[Harrisburg, Pa.] : Commonwealth of Pennsylvania, Dept. of Internal Affairs, Topographic and Geologic Survey, 1957
[Harrisburg, Pa.] : Commonwealth of Pennsylvania, Dept. of Internal Affairs, Topographic and Geologic Survey, 1957
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5
by Fettke, Charles R. (Charles Reinhard), 1888-1959
[Harrisburg, Pa.] : Pennsylvania, Bureau of Topographic and Geologic Survey, 1953
[Harrisburg, Pa.] : Pennsylvania, Bureau of Topographic and Geologic Survey, 1953
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6
by Sherrill, R. E. (Richard Ellis), 1899-1952
[Harrisburg, Pa.] : Commonwealth of Pennsylvania, Dept. of Internal Affairs, Bureau of Topographic and Geological Survey, 1939
[Harrisburg, Pa.] : Commonwealth of Pennsylvania, Dept. of Internal Affairs, Bureau of Topographic and Geological Survey, 1939
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Book
7
by Lytle, William S.
[Harrisburg, Pa.] : Pennsylvania, Bureau of Topographic and Geologic Survey, 1961
[Harrisburg, Pa.] : Pennsylvania, Bureau of Topographic and Geologic Survey, 1961
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8
by Wagner, Walter Richard, 1928-1974
[Harrisburg, Pa.] : Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey, 1968
[Harrisburg, Pa.] : Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey, 1968
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9
by Harper, John A.
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geological Survey, 1990
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geological Survey, 1990
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10
by Cozart, Cheryl L.
Harrisburg, Pa. : Pennsylvania Bureau of Topographic and Geologic Survey, 1993
Harrisburg, Pa. : Pennsylvania Bureau of Topographic and Geologic Survey, 1993
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11
by Harper, John A.
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geological Survey, 1982
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geological Survey, 1982
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12
by Fettke, Charles R. (Charles Reinhard), 1888-1959
[Harrisburg, Pa.] : Commonwealth of Pennsylvania, Dept. of Internal Affairs, Topographic and Geologic Survey, 1951
[Harrisburg, Pa.] : Commonwealth of Pennsylvania, Dept. of Internal Affairs, Topographic and Geologic Survey, 1951
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13
14
by Lytle, William S.
Harrisburg PA. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1964
Harrisburg PA. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1964
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15
by Lytle, William S.
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1966
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1966
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16
by Piotrowski, Robert G.
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geological Survey, 1979
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geological Survey, 1979
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17
by Lytle, William S.
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1975
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1975
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18
by Wagner, Walter Richard, 1928-1974
Harrisburg, Pa. : Pennsylvania Bureau ofTopographic and Geologic Survey, 1969
Harrisburg, Pa. : Pennsylvania Bureau ofTopographic and Geologic Survey, 1969
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Map
19
by Lytle, William S.
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1967
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1967
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20
by Lytle, William S., Piotrowski, Robert G., Heyman, Louis
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1976
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1976
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