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by Edmunds, William E.
Harrisburg : Commonwealth of Pennsylvania, Dept. of Conservation and Natural Resources, Office of Conservation and Engineering Services, Bureau of Topographic and Geologic Survey, 2004
2nd ed.
Harrisburg : Commonwealth of Pennsylvania, Dept. of Conservation and Natural Resources, Office of Conservation and Engineering Services, Bureau of Topographic and Geologic Survey, 2004
2nd ed.
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4
by Bining, Arthur Cecil, 1893-1957
Harrisburg, Pa. : Pennsylvania Historical Commission, 1938
Harrisburg, Pa. : Pennsylvania Historical Commission, 1938
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5
Harrisburg, Pa. : Pennsylvania Game Commission, 1991
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7
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by Shaw, L. C., Busch, W. F.
Harrisburg, Commonwealth of Pennsylvania, Dept. of Forests and Waters, 1970
Harrisburg, Commonwealth of Pennsylvania, Dept. of Forests and Waters, 1970
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9
by Platt, Franklin, 1844-1900
Harrisburg [Pa.] : Published by the Board of Commissioners for the Second Geological Survey, 1876
Harrisburg [Pa.] : Published by the Board of Commissioners for the Second Geological Survey, 1876
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10
by Fleeger, Gary M. (Gary Mark)
[Pennsylvania] : Pennsylvania Geological Survey, 2004
[Pennsylvania] : Pennsylvania Geological Survey, 2004
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11
by Wood, George B. (George Bacon), 1797-1879
Philadelphia : T.K. and P.G. Collins, printers, 1851
Philadelphia : T.K. and P.G. Collins, printers, 1851
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12
by Barnes, John Henry, 1946-
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geologic Survey, 2002
3rd edition.
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geologic Survey, 2002
3rd edition.
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13
14
by Ashburner, Charles A. (Charles Albert), 1854-1889
Harrisburg [Pa.] : Pub. by the Board of Commissioners for the Second Geological Survey, 1883
Harrisburg [Pa.] : Pub. by the Board of Commissioners for the Second Geological Survey, 1883
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15
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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16
17
by Wiswall, C. Gil
[Harrisburg, Pa.] : Pennsylvania, Office of Parks and Forestry, Bureau of Topographic and Geologic Survey, 1993
2nd ed.
[Harrisburg, Pa.] : Pennsylvania, Office of Parks and Forestry, Bureau of Topographic and Geologic Survey, 1993
2nd ed.
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18
by Way, John H.
Harrisburg, Pa. : Pennsylvania Bureau of Topographic and Geologic Survey, 1993
Harrisburg, Pa. : Pennsylvania Bureau of Topographic and Geologic Survey, 1993
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19
by Faill, Rodger T.
[Harrisburg, Pa.] : [Place of publication not identified] : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Office of Parks and Forestry, Bureau of Topographic and Geologic Survey and Bureau of State Parks ; State of Delaware, Delaware Geological Survey and Dept. of Natural Resources and Environmental Control, Division of Parks and Recreation, 1991
[Harrisburg, Pa.] : [Place of publication not identified] : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Office of Parks and Forestry, Bureau of Topographic and Geologic Survey and Bureau of State Parks ; State of Delaware, Delaware Geological Survey and Dept. of Natural Resources and Environmental Control, Division of Parks and Recreation, 1991
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20
by Harper, John A.
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geological Survey, 1992
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geological Survey, 1992
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