Topographic and geological survey of Pennsylvania.

The geology of Pennsylvania /
Published: (1999)

A syllabus of Pennsylvania geology and mineral resources /
by: Ashley, Geo. H. (George Hall), 1866-1951
Published: (1931)

Roadside geology of Pennsylvania /
by: VanDiver, Bradford B.
Published: (1990)

Guidebook to the geology of the Pennsylvania Turnpike ; Carlisle to Irwin /
by: Cleaves, Arthur B. (Arthur Bailey), 1905-
Published: (1949)

Annotated bibliography of Pennsylvania geology ; supplement to 1969.
by: Cramer, Howard Ross, 1925-
Published: (1972)

Outstanding scenic geological features of Pennsylvania /
by: Geyer, Alan R.
Published: (1979)

Stratigraphic correlation chart of Pennsylvania /
Published: (1986)

Valley Forge National Historical Park, Montgomery and Chester Counties /
by: Wiswall, C. Gil
Published: (1993)

Geology and mineral resources of the Washingtonville and Millville quadrangles : Montour, Columbia, and Northumberland counties, Pennsylvania /
by: Way, John H.
Published: (1993)

Geology and mineral resources of the Lock Haven quadrangle, Clinton and Lycoming counties, Pennsylvania /
Published: (1977)

Geology and mineral resources of the Blandburg, Tipton, Altoona, and Bellwood quadrangles : Blair, Cambria, Clearfield and Centre counties, Pennsylvania /
by: Faill, Rodger T.
Published: (1989)

Anthracite basins of eastern Pennsylvania : Pottsville to Shamokin, Pennsylvania, July 13-16, 1989 /
by: Eggleston, Jane R.
Published: (1989)

Geology and mineral resources of the Carlisle and Mechanicsburg quadrangles, Cumberland county, Pennsylvania /
Published: (1978)

A few facts regarding the Geological survey of Pennsylvania : exposing the erroneous statements and claims of J. P. Lesley, secretary of the American iron association.
Published: (1859)

Guidebook for field trips, Pittsburgh meeting, 1959 /
Published: (1959)

Information circular.

Educational series.

Progress report.

Rocks and minerals of Pennsylvania /
by: Barnes, John Henry, 1946-
Published: (1991)

Ground water in south-central Pennsylvania,
by: Lohman, S. W. (Stanley William), 1907-1992
Published: (1938)

Bituminous coal fields of Pennsylvania /
Published: (1926)

Sinkholes in Pennsylvania /
by: Kochanov, William E., 1952-
Published: (1999)

Geology of the Ransom quadrangle, Lackawanna, Luzerne and Wyoming Counties, Pennsylvania : description of the outcropping and subsurface strata of Devonian, Mississippian, and Pennsylvanian age and of the unconsolidated sediments of Quaternary age /
by: Kehn, Thomas M., et al.
Published: (1966)

Geologic map index of Pennsylvania /
by: McIntosh, Willard L.
Published: (1981)

Removal of lateral inconsistency from seismic data by means of consistent strata /
by: Sepassi, Bahman
Published: (1978)

Geology of the McCalls Ferry-Quarryville district, Pennsylvania /
by: Knopf, Eleanora Frances Bliss, 1883-, et al.
Published: (1929)

Surficial geology and geomorphology of Potter County, Pennsylvania /
by: Denny, Charles Storrow, 1911-
Published: (1956)

Geological Survey research /

Biennial report of the Mississippi Geological, Economic, and Topographical Survey.
Published: (1963)

Geological magazine.

Geology and mineral resources of the Bellefonte quadrangle, Pennsylvania /
by: Butts, Charles, 1863-1946, et al.
Published: (1936)

Stratigraphic correlation chart of Pennsylvania /
Published: (1983)

Annual report of the Geological Survey of the State of New Jersey for the year ...
Published: (1855)

Economic geology of the Amity quadrangle, eastern Washington County, Pennsylvania /
by: Clapp, Frederick G. (Frederick Gardner), 1879-1944
Published: (1907)

Geology of the New Tripoli quadrangle, Lehigh, Berks, Schuylkill, and Carbon counties, Pennsylvania /
by: Epstein, Jack Burton, 1935-, et al.
Published: (1993)

Publications of the Geological Survey /
Published: (1964)