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1
著者: Willard, Bradford, 1894-1973
Harrisburg [Pa.] : Pennsylvania, Bureau of Topographic and Geologic Survey, 1976
Harrisburg [Pa.] : Pennsylvania, Bureau of Topographic and Geologic Survey, 1976
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2
著者: Ashley, Geo. H. (George Hall), 1866-1951
Harrisburg [Pa.] : Pennsylvania. Bureau of Topographic and Geologic Survey, 1922
2nd ed.
Harrisburg [Pa.] : Pennsylvania. Bureau of Topographic and Geologic Survey, 1922
2nd ed.
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3
著者: Sisler, James D. (James Donaldson), 1894-
[Harrisburg, Pa.] : Commonwealth of Pennsylvania, Department of Internal Affairs, Bureau of Topographic and Geological Survey, 1924
[Harrisburg, Pa.] : Commonwealth of Pennsylvania, Department of Internal Affairs, Bureau of Topographic and Geological Survey, 1924
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4
5
著者: Gray, Carlyle
Harrisburg, [Pa.] : Pennsylvania Bureau of Topographic and Geologic Survey, 1958
Harrisburg, [Pa.] : Pennsylvania Bureau of Topographic and Geologic Survey, 1958
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6
著者: Ashley, Geo. H. (George Hall), 1866-1951
Harrisburg : Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey, 1969
Harrisburg : Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey, 1969
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7
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雑誌
8
著者: Socolow, Arthur A.
Harrisburg, Pa. : Pennsylvania Topographic and Geologic Survey, 1961
Harrisburg, Pa. : Pennsylvania Topographic and Geologic Survey, 1961
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9
著者: MacLachlan, David B.
Harrisburg [Pa.] : Pennsylvania Bureau of Topographic and Geologic Survey, 1975
Harrisburg [Pa.] : Pennsylvania Bureau of Topographic and Geologic Survey, 1975
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10
11
著者: Sisler, James D. (James Donaldson), 1894-
[Harrisburg] : Bureau of Topographic and Geological Survey, 1922
[Harrisburg] : Bureau of Topographic and Geological Survey, 1922
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12
著者: Willard, Bradford, 1894-
[Harrisburg] : Commonwealth of Pennsylvania, Department of Internal Affairs, Bureau of Topographic and Geologic Survey, 1956
Third edition, revised.
[Harrisburg] : Commonwealth of Pennsylvania, Department of Internal Affairs, Bureau of Topographic and Geologic Survey, 1956
Third edition, revised.
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13
著者: Ashley, Geo. H. (George Hall), 1866-1951
[Harrisburg] : Bureau of Topographic and Geological Survey, 1920
[Harrisburg] : Bureau of Topographic and Geological Survey, 1920
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14
15
著者: Shepps, Vincent C. (Vincent Chester), 1928-
[Harrisburg, PA] : Dept. of Internal Affairs, Topographic and Geologic Survey, 1959
[Harrisburg, PA] : Dept. of Internal Affairs, Topographic and Geologic Survey, 1959
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16
17
著者: Ashley, Geo. H. (George Hall), 1866-1951
[Harrisburg] : Bureau of Topographic and Geological Survey, 1922
Rev. May 25, 1922.
[Harrisburg] : Bureau of Topographic and Geological Survey, 1922
Rev. May 25, 1922.
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18
著者: Reese, John F.
[Harrisburg] : Bureau of Topographic and Geological Survey, 1922
[Harrisburg] : Bureau of Topographic and Geological Survey, 1922
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19
20
著者: Shaffner, Marchant N. (Marchant Nissley), 1897-
[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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