Suggested Topics within your search.
Suggested Topics within your search.
Geology
97
Geology, Stratigraphic
50
Géologie
33
Stratigraphie
20
Glacial epoch
15
Caves
10
Devonian Geologic Period
7
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21
by Stone, Ralph W. (Ralph Walter), 1876-1964
Harrisburg, Dept. of internal affairs, Topographic and geologic survey, 1930
“...Bulletin G;...”Harrisburg, Dept. of internal affairs, Topographic and geologic survey, 1930
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22
by Swartz, Frank M. (Frank McKim), 1899-1982
[Harrisburg] Topographic and Geologic Survey, 1948
“...Bulletin G;...”[Harrisburg] Topographic and Geologic Survey, 1948
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23
by Leighton, Henry, 1884-
Harrisburg, Pa. : Department of Internal Affairs, Topographic and Geologic Survey, 1947
Second edition.
“...Bulletin G ;...”Harrisburg, Pa. : Department of Internal Affairs, Topographic and Geologic Survey, 1947
Second edition.
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Book
24
by Fettke, Charles R. (Charles Reinhard), 1888-1959
[Harrisburg, Pa.] : Department of Internal Affairs, Topographic and Geologic Survey, 1954
“...Bulletin G ;...”[Harrisburg, Pa.] : Department of Internal Affairs, Topographic and Geologic Survey, 1954
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Book
25
by White, George W. (George Willard), 1903-1985
Harrisburg, 1969
“...Bulletin G;...”Harrisburg, 1969
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Book
26
by Howell, Benjamin F. (Benjamin Franklin), 1890-1976
[Harrisburg] : Department of Internal Affairs, 1957
“...Bulletin G ;...”[Harrisburg] : Department of Internal Affairs, 1957
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Book
27
by Ellison, Robert L., 1931-
Harrisburg, [publisher not identified], 1965
“...Bulletin G ;...”Harrisburg, [publisher not identified], 1965
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Book
28
by Swartz, Frank M. (Frank McKim), 1899-1982
Harrisburg, Pa. : Commonwealth of Pennsylvania, Department of Internal Affairs, Topographic and Geologic Survey, 1950
“...Bulletin G ;...”Harrisburg, Pa. : Commonwealth of Pennsylvania, Department of Internal Affairs, Topographic and Geologic Survey, 1950
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29
30
by Cramer, Howard Ross, 1925-
Harrisburg : Dept. of Internal Affairs, Bureau of Topographic and Geologic Survey; [for sale by the Division of Documents, Bureau of Publications], 1965
“...Bulletin G ;...”Harrisburg : Dept. of Internal Affairs, Bureau of Topographic and Geologic Survey; [for sale by the Division of Documents, Bureau of Publications], 1965
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Book
31
by Rones, Morris, 1922-1965
Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geological Survey, 1969
“...Bulletin G ;...”Harrisburg, Pa. : Pennsylvania, Bureau of Topographic and Geological Survey, 1969
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32
33
by Shepps, Vincent C. (Vincent Chester), 1928-1967
Harrisburg : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey : [Available from the Bureau of Publications, Dept. of Property and Supplies], 1963
“...Bulletin G ;...”Harrisburg : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey : [Available from the Bureau of Publications, Dept. of Property and Supplies], 1963
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Book
34
by Chafetz, Henry S. (Henry Simon)
Harrisburg, PA. : Pennsylvania, Bureau of Topographic and Geological Survey, 1969
“...Bulletin G ;...”Harrisburg, PA. : Pennsylvania, Bureau of Topographic and Geological Survey, 1969
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35
by Willard, Bradford, 1894-1973, Cleaves, Arthur B. (Arthur Bailey), 1905-1985
Harrisburg, Pa., Dept. of Internal Affairs, Topographic and Geologic Survey, 1938
“...Bulletin G ;...”Harrisburg, Pa., Dept. of Internal Affairs, Topographic and Geologic Survey, 1938
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36
by Willard, Bradford, 1894-1973
Harrisburg, Pa., Department of internal affairs, Topographic and geologic survey, 1939
“...Bulletin G ;...”Harrisburg, Pa., Department of internal affairs, Topographic and geologic survey, 1939
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37
by Leverett, Frank, 1859-1943
Harrisburg, Pa., Dept. of internal affairs, Topographic and geologic survey, 1934
“...Bulletin G ;...”Harrisburg, Pa., Dept. of internal affairs, Topographic and geologic survey, 1934
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38
by Fettke, Charles R. (Charles Reinhard), 1888-1959
[Harrisburg, Pa.] : Pennsylvania Bureau of Topographic and Geologic Survey, 1948
“...Bulletin G ;...”[Harrisburg, Pa.] : Pennsylvania Bureau of Topographic and Geologic Survey, 1948
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39
by Epstein, Jack Burton, 1935-
Harrisburg, 1969
“...Bulletin G;...”Harrisburg, 1969
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40
by Hobson, John Peter, 1928-
Harrisburg, [publisher not identified], 1963
“...Bulletin G ;...”Harrisburg, [publisher not identified], 1963
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