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1
by Greenman, D. W. (David W.)
Harrisburg, PA. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1955
Harrisburg, PA. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1955
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2
by Barker, James L., 1936-
Harrisburg, Pa. : U.S. Geological Survey, 1984
Harrisburg, Pa. : U.S. Geological Survey, 1984
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3
by Thacker, Joseph L., Satterfield, Ira R.
Rolla : Missouri Dept. of Natural Resources, Division of Geology and Land Survey, Geological Survey, 1977
Rolla : Missouri Dept. of Natural Resources, Division of Geology and Land Survey, Geological Survey, 1977
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4
by Rima, Donald R. (Donald Robert), 1925-
[Harrisburg, Pa.] : Pennsylvania Bureau of Topograpic and Geologic Survey, 1955
[Harrisburg, Pa.] : Pennsylvania Bureau of Topograpic and Geologic Survey, 1955
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5
by Van Tuyl, Donald W. (Donald Wells), 1917-1986, Klein, N. H.
Harrisburg, PA. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1951
Harrisburg, PA. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1951
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6
by Meisler, Harold, Becher, Albert E.
Harrisburg, [Commonwealth of Pennsylvania, Dept. of Internal Affairs, Bureau of Topographic and Geologic Survey] 1966
Harrisburg, [Commonwealth of Pennsylvania, Dept. of Internal Affairs, Bureau of Topographic and Geologic Survey] 1966
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7
8
by Ashley, Jeffrey S., 1965-
Lincoln : University of Nebraska Press, 1999
Lincoln : University of Nebraska Press, 1999
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9
by Johnston, Herbert E.
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1966
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1966
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10
by Poth, Charles W.
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1968
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1968
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11
by Johnston, Herbert E.
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1970
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1970
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12
by Hollowell, Jerrald R.
Harrisburg [Pa.] : Pennsylvania, Bureau of Topographic and Geologic Survey, 1971
Harrisburg [Pa.] : Pennsylvania, Bureau of Topographic and Geologic Survey, 1971
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13
by Scott, Marta, Ethridge, Zeb
Christchurch ; Timaru : Environment Canterbury Regional Council, 2015
Christchurch ; Timaru : Environment Canterbury Regional Council, 2015
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14
by Lloyd, Orville B., Growitz, Douglas J.
Harrisburg, Pa. : Pennsylvania. Bureau of Topographic and Geologic Survey, 1977
Harrisburg, Pa. : Pennsylvania. Bureau of Topographic and Geologic Survey, 1977
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15
by Meisler, Harold
Harrisburg [Pa.] : Pennsylvania, Bureau of Topogaphic and Geologic Survey, 1963
Harrisburg [Pa.] : Pennsylvania, Bureau of Topogaphic and Geologic Survey, 1963
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16
by Poth, Charles W.
Harrisburg [Pa.] : Pennsylvania, Bureau of Topographic and Geologic Survey, 1963
Harrisburg [Pa.] : Pennsylvania, Bureau of Topographic and Geologic Survey, 1963
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17
by Poth, Charles W.
Harrisburg, Pa. : Pennsylvania. Bureau of Topographic and Geologic Survey, 1973
Harrisburg, Pa. : Pennsylvania. Bureau of Topographic and Geologic Survey, 1973
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18
by Schiner, George R., 1926-, Kimmel, Grant E.
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1976
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1976
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19
by Newport, Thomas Gwyn, 1922-
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1973
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geologic Survey, 1973
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20
by Carswell, Louis D.
Harrisburg [Pa.] : Pennsylvania, Bureau of Topographic and Geologic Survey, 1963
Harrisburg [Pa.] : Pennsylvania, Bureau of Topographic and Geologic Survey, 1963
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