Guidebook for field trips, Pittsburgh meeting, 1959 /

Information circular.

Educational series.

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

Progress report.

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

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)

Pennsylvania geology.

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 Lock Haven quadrangle, Clinton and Lycoming counties, Pennsylvania /
Published: (1977)

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

Biennial report of the topographic and geologic survey of Pennsylvania.
Published: (1914)

Topographic and geological survey of Pennsylvania.
Published: (1912)

Topographic and geological survey of Pennsylvania.
Published: (1908)

Topographic and geologic survey /
Published: (1911)

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)

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

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

Bituminous coal fields of Pennsylvania /
Published: (1926)

Guidebook for field trips : Atlantic City meeting, 1957 /
Published: (1957)

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

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

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

Guidebook to the geology about Pittsburgh /
by: Leighton, Henry, 1884-
Published: (1939)

Guidebook to the geology about Pittsburgh.
by: Leighton, Henry, 1884-
Published: (1947)

Field trip guidebook.

Guidebook for field trips, Minneapolis meeting, 1956 : field trip no. 1, Precambrian of northeastern Minnesota /
Published: (1956)

Annual field trip guidebook.

Guidebook for annual field trip.

Guidebook ... annual field trip /

Geology of the Pittsburgh area /
Published: (1970)

Guidebook to field trips : Association of Missouri Geologists, 50th Annual Meeting, September 26-27, 2003, Springfield, Missouri /
Published: (2004)

GSA Cincinnati '81 field trip guidebooks /
Published: (1981)

Geologic field trip guidebook : thru the States of Chihuahua and Sinaloa, Mexico /
Published: (1974)

Delaware Basin field trip guidebook : October 1-5, 1982 /
Published: (1982)