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21
Author: Faill, Rodger T.
Published 1991
Record Source: Published Materials
Subjects and Genres: '; “...Geology Pennsylvania....”
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22
Author: Barnes, John Henry, 1946-
Published 2002
Record Source: Published Materials
Subjects and Genres: '; “...Geology Pennsylvania Popular works....”
The geological story of Pennsylvania.
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23
Author: Frazer, Persifor, 1844-1909.
Published 1884
Record Source: Published Materials
Subjects and Genres: '; “...Geology Pennsylvania Chester Valley....”
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24
Author: Prouty, Chilton Eaton, 1914-
Published 1959
Record Source: Published Materials
Subjects and Genres: '; “...Geology Pennsylvania....”
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25
Author: Fettke, Charles R. 1888-1959.
Published 1941
Record Source: Published Materials
Subjects and Genres: '; “...Geology Pennsylvania....”
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26
Author: Lohman, S. W. 1907-1992.
Published 1937
Record Source: Published Materials
Subjects and Genres: '; “...Geology Pennsylvania....”
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27
Subjects and Genres: '; “...Geology Pennsylvania Bucks County....”
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28
Author: Frazer, Persifor, 1844-1909.
Published 1884
Record Source: Published Materials
Subjects and Genres: '; “...Geology Pennsylvania Chester Valley....”
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29
Subjects and Genres: '; “...Geology Pennsylvania Bucks County....”
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30
Published 1858
Record Source: Published Materials
Subjects and Genres: '; “...Geology Pennsylvania....”
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31
Author: Leggette, R. M. 1899-
Published 1936
Record Source: Published Materials
Subjects and Genres: '; “...Geology Pennsylvania....”
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32
Author: Ashburner, Charles A. 1854-1889.
Published 1884
Record Source: Published Materials
Subjects and Genres: '; “...Geology Pennsylvania Carbon County....”
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33
Record Source: Published Materials
Subjects and Genres: '; “...Geology Pennsylvania....”
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34
Subjects and Genres: '; “...Geology Pennsylvania York County....”
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36
Author: Cate, Addison S.
Published 1961
Subjects and Genres: '; “...Geology Pennsylvania....”
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37
Author: Cate, Addison S.
Published 1961
Record Source: Published Materials
Subjects and Genres: '; “...Geology Pennsylvania....”
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38
Author: Flaherty, Kathy J.
Published 2002
Record Source: Published Materials
Subjects and Genres: '; “...Petroleum Geology Pennsylvania....”
Click here for the online version.
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39
Author: Goodwin, Bruce K.
Published 1964
Subjects and Genres: '; “...Geology Pennsylvania....”
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40
Author: Goodwin, Bruce K.
Published 1964
Record Source: Published Materials
Subjects and Genres: '; “...Geology Pennsylvania....”
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