Aihe-ehdotuksia
Aihe-ehdotuksia
Geology
1 834
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486
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356
Géologie
319
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196
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179
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1
Tekijä Dodge, Clifford H.
[Harrisburg: Pennsylvania Geological Survey, 2005
[Harrisburg: Pennsylvania Geological Survey, 2005
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2
Tekijä Russell, Bill, 1935-
University Park, Pa. : Pennsylvania State University Press, 2006
University Park, Pa. : Pennsylvania State University Press, 2006
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3
Washington, DC : American Chemical Society, 1993
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4
Tekijä Branner, John Casper, 1850-1922
[Philadelphia?, Pa.] : [American Philosophical Society], 1886
[Philadelphia?, Pa.] : [American Philosophical Society], 1886
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5
Tekijä Pleasants, Henry, 1884-1963
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6
Tekijä 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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7
Tekijä 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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8
Tekijä Frazer, Persifor, 1844-1909
Harrisburg [Pa.] : Pub. by the Board of commissioners for the Second geological survey, 1876
Harrisburg [Pa.] : Pub. by the Board of commissioners for the Second geological survey, 1876
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9
Tekijä Richardson, G. B. (George Burr), 1872-1949
Washington : Govt. Print. Off., 1936
Washington : Govt. Print. Off., 1936
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10
Tekijä 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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11
12
Tekijä 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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13
Harrisburg, Pa. : Field Conference of Pennsylvania Geologists, Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey, 1980
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Konferenssijulkaisu
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14
Tekijä Rooney, Eric M.
[California, PA : California University of Pennsylvania], 1996
[California, PA : California University of Pennsylvania], 1996
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15
Tekijä 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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16
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17
Tekijä Socolow, Arthur A.
Harrisburg, Pa. : Pennsylvania Topographic and Geologic Survey, 1961
Harrisburg, Pa. : Pennsylvania Topographic and Geologic Survey, 1961
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18
Tekijä 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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19
20
Tekijä Thalkar, Tania Lin
1995
1995
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