A Guide to the Great Gardens of the Philadelphia Region
A Guide to the Great Gardens of the Philadelphia Region
Adam Levine,Rob Cardillo
2007
Geology of the Philipsburg Quadrangle
Geology of the Philipsburg Quadrangle
Gary B. Glass
1972
Hiking Pennsylvania (America's Best Day Hiking Series)
Hiking Pennsylvania (America's Best Day Hiking Series)
Mike Bleech
2000
Geology and Mineral Resources of the Southern Half of the Penfield 15-Minute Quadrangle, Pennsylv...
Geology and Mineral Resources of the Southern Half of the Penfield 15-Minute Quadrangle, Pennsylv...
William E. Edmunds, Thomas M. Berg, William C. Darrah
1973
Lower Middle Ordovician Carbonates in Central Pennsylvania
Lower Middle Ordovician Carbonates in Central Pennsylvania
Morris Rones
1969
Birding the Delaware Valley Region
Birding the Delaware Valley Region
John J. Harding, Justin J. Harding
1980
Birder's Guide to Pennsylvania
Birder's Guide to Pennsylvania
Paula Ford
1995
Pleistocene Geology and Unconsolidated Deposits of the Delaware Valley, Matamoras to Shawnee on D...
Pleistocene Geology and Unconsolidated Deposits of the Delaware Valley, Matamoras to Shawnee on D...
G.H. Crowl
1971
Geology and Mineral Resources of the Southern Half of the New Bloomfield Quadrangle, Pennsylvania
Geology and Mineral Resources of the Southern Half of the New Bloomfield Quadrangle, Pennsylvania
James L. Dyson
1974
The Geomorphology of the Wyoming Lackawanna Region
The Geomorphology of the Wyoming Lackawanna Region
Harry Augustus Itter
1959
Geology and Mineral Resources of the Southern Half of the Clearfield 15-Minute Quadrangle, Pennsy...
Geology and Mineral Resources of the Southern Half of the Clearfield 15-Minute Quadrangle, Pennsy...
Albert D. Glover
1973
Geology and Mineral Resources of the Northern Half of the Houtzdale 15-Minute Quadrangle, Pennsyl...
Geology and Mineral Resources of the Northern Half of the Houtzdale 15-Minute Quadrangle, Pennsyl...
William E. Edmunds
1968
Geology of the Pittsburgh Area
Geology of the Pittsburgh Area
Walter R. Wagner, Louis Heyman, Richard E. Gray, David Be...
1970
Guide to the Horse Shoe Curve Section Between Altoona and Gallitzin, Central Pennsylvania
Guide to the Horse Shoe Curve Section Between Altoona and Gallitzin, Central Pennsylvania
Frank M. Swartz
1965
Surficial Geology of the Stroudsburg Quadrangle
Surficial Geology of the Stroudsburg Quadrangle
Jack B. Epstein
1973
Recent Geological History of the Delaware Valley below the Water Gap
Recent Geological History of the Delaware Valley below the Water Gap
Freeman Ward
1962
Glacial Border Deposits of Late Wisconsinan Age in Northeastern Pennsylvania
Glacial Border Deposits of Late Wisconsinan Age in Northeastern Pennsylvania
G.H. Crowl, W.D. Sevon
1980
Geology and mineral resources of the Washingtonville and Millville quadrangles, Montour, Columbia...
Geology and mineral resources of the Washingtonville and Millville quadrangles, Montour, Columbia...
John H. Way
1993
Stratigraphy of the Devonian Trimmers Rock in Eastern Pennsylvania
Stratigraphy of the Devonian Trimmers Rock in Eastern Pennsylvania
Lawrence A. Frakes
1967
Lithostratigraphy of the Middle Ordovician Salona and Coburn Formations in Central Pennsylvania
Lithostratigraphy of the Middle Ordovician Salona and Coburn Formations in Central Pennsylvania
Richard Rogers Thompson
1974
Greater Pittsburgh Region Thickness of Rock over the Upper Freeport Coal
Greater Pittsburgh Region Thickness of Rock over the Upper Freeport Coal
J.L. Craft, L. Heyman, R.G. Piotrowski
1976
Hydrogeology of the Carbonate Rocks of the Lebanon Valley, Pennsylvania
Hydrogeology of the Carbonate Rocks of the Lebanon Valley, Pennsylvania
Harold Meisler
1963
Geology and Mineral Resources of the Salladsburg and Cogan Station Quadrangles, Lycoming County, ...
Geology and Mineral Resources of the Salladsburg and Cogan Station Quadrangles, Lycoming County, ...
Rodger T. Faill, Richard B. Wells, William D. Sevon
1977
Geology and Mineral Resources of Northeastern Franklin County, Pennsylvania
Geology and Mineral Resources of Northeastern Franklin County, Pennsylvania
Samuel I. Root
1992
Geology and Mineral Resources of the Linden and Williamsport Quadrangles, Lycoming County, Pennsy...
Geology and Mineral Resources of the Linden and Williamsport Quadrangles, Lycoming County, Pennsy...
Rodger T. Faill, Richard B. Wells, William D. Sevon
1977
Geology of Southeastern Franklin County, Pennsylvania
Geology of Southeastern Franklin County, Pennsylvania
Samuel I. Root
1968
Properties and Uses of Pennsylvania Shales and Clays, Southeastern Pennsylvania
Properties and Uses of Pennsylvania Shales and Clays, Southeastern Pennsylvania
Karl V. Hoover, Timothy E. Saylor, Davis M. Lapham, Miles...
1971
Structure and Stratigraphy of the Limestones and Dolomites of Dauphin County Pennsylvania
Structure and Stratigraphy of the Limestones and Dolomites of Dauphin County Pennsylvania
David B. MacLachlan
1974

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