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1
2
by Crist, Ray H. (Ray Henry), 1900-2005
[Carlisle, Penn.] : Long Island City, NY : [Robert Crist]; Seaburn Pub. [manufacturer], 2005
[Carlisle, Penn.] : Long Island City, NY : [Robert Crist]; Seaburn Pub. [manufacturer], 2005
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Book
3
by Mearns, Barbara
Dumfries [Scotland] : B. and R. Mearns, 2007
Dumfries [Scotland] : B. and R. Mearns, 2007
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Book
4
5
[Pittsburgh, Pa.] : Dan Handley, 2012
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Unknown
6
[Pittsburgh, Pa.] : Dan Handley Science Media, LLC, 2012
Widescreen.
Widescreen.
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Unknown
7
by Crist, R. Henry (Ray Henry), 1900-2005
[Carlisle, Pa.] : [Long Island City, N.Y.] : [Robert Crist] ; [Seaburn Pub. [manufacturer], 2005
[Carlisle, Pa.] : [Long Island City, N.Y.] : [Robert Crist] ; [Seaburn Pub. [manufacturer], 2005
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Book
8
by Wherry, Edgar T. (Edgar Theodore), 1885-1982
[Lancaster, PA] : [The American Mineralogist], 1918
[Lancaster, PA] : [The American Mineralogist], 1918
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Book
9
10
by Kieft, Lester, 1912-2006
Lewiston, Pa. : [Place of publication not identified] : Bucknell Dept. of Chemistry ; Susquehanna Valley Section, American Chemical Society, 1980
Lewiston, Pa. : [Place of publication not identified] : Bucknell Dept. of Chemistry ; Susquehanna Valley Section, American Chemical Society, 1980
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Book
11
by Earnest, Ernest Penney, 1901-
Philadelphia : University of Pennsylvania Press, 1940
Philadelphia : University of Pennsylvania Press, 1940
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Book
12
[Pittsburgh, Pa.] : Dan Handley Science Media, LLC, 2012
Widescreen.
Widescreen.
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Book
13
by Rimby, Susan
University Park, Pennsylvania : The Pennsylvania State University Press, 2012
University Park, Pennsylvania : The Pennsylvania State University Press, 2012
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Map
14
by Corcoran, Irma
Philadelphia : American Philosophical Society, 1992
Philadelphia : American Philosophical Society, 1992
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Manuscript
Book
15
by Corcoran, Irma
Philadelphia, Pa. : American Philosophical Society, 1992
Philadelphia, Pa. : American Philosophical Society, 1992
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Book
16
by Hoffman, Dan
Baltimore : PublishAmerica, 2008
Baltimore : PublishAmerica, 2008
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Book
17
by Dillard, Annie
New York : Quality Paperback Book Club, 1990
New York : Quality Paperback Book Club, 1990
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Book
18
19
20
by Hepburn, Joseph Samuel, 1885-1978
[Philadelphia, Pa.] : Franklin Institute of the State of Pennsylvania, 1947
[Philadelphia, Pa.] : Franklin Institute of the State of Pennsylvania, 1947
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Book