Showing 1 - 20 results of 99 for search '', query time: 0.12s Refine Results
1
by Ashley, Geo. H. (George Hall), 1866-1951
Harrisburg [Pa.] : Pennsylvania. Bureau of Topographic and Geologic Survey, 1922
2nd ed.

Government Document Book
2
by Billings, Cecil M.
[Philadelphia : Rittenhouse Astronomical Society, 1961

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Book
3
Oil City, Pa. : The Museum, 1993

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Unknown
4
by Gilbert, Lawrence James
[California, PA : California State College], 1979

Thesis Book
5
by Wheeler, A. G.
Harrisburg, Pa. Commonwealth of Pennsylvania, Dept. of Agriculture, Bureau of Plant Industry 1975

Book
7
[Pittsburgh, Pa.] : Dan Handley Science Media, LLC, 2012
Widescreen.

Unknown
8
by Brua, Stan A.
Harrisburg, Pa. : The Survey, 1978

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Government Document Book
9
[Pittsburgh, Pa.] : Dan Handley, 2012

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Unknown
10
[Pittsburgh, Pa.] : Dan Handley Science Media, LLC, 2012
Widescreen.

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Unknown
11
by Palmo, Scott
Apollo, Pa. : Closson Press, 2011

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Book
12
Harrisburg, Pa. : Bureau of Topographic and Geologic Survey, Pennsylvania Department of Conservation and Natural Resources, 1998

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Book
13
by Pearre, Nancy C., Heyl, Allen V. (Allen Van), 1918-2008
[Harrisburg, Pa.] : Pennsylvania, Bureau of Topographic and Geologic Survey, 1959

Government Document Book
14
Philadelphia : John Doughty, 1830

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Book
19
by Peck, Robert McCracken, 1952-
Philadelphia : University of Pennsylvania Press, 2012

Book
20
by Carlson, Mackenzie S., 1962-
[Place of publication not identified] : [publisher not identified], 1999

Book