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by Meyer, Paul W. (Paul William), 1952-, Briger, Catriona Bull, Barnard, Edward Sibley, 1936-
New York : Columbia University Press, 2017
New York : Columbia University Press, 2017
Book
5
by Geyer, Alan R., Bolles, William H.
Harrisburg, Pa. : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey : may be purchased from State Book Store 1979
Harrisburg, Pa. : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey : may be purchased from State Book Store 1979
Book
7
by Armistead, George L.
New York : Scott & Nix, Inc., 2015
First edition 2015, A Scott & Nix edition.
New York : Scott & Nix, Inc., 2015
First edition 2015, A Scott & Nix edition.
Book
9
10
by Leighton, Henry, 1884-
Harrisburg, Pa. : Department of internal affairs, Topographic and geologic survey, 1939
Harrisburg, Pa. : Department of internal affairs, Topographic and geologic survey, 1939
Book
11
13
by Oplinger, Carl S., 1936-
New Brunswick, N.J. : Rivergate Books, 2006
Revised and expanded edition.
New Brunswick, N.J. : Rivergate Books, 2006
Revised and expanded edition.
Book
14
16
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