Water quality in the Allegheny and Monongahela River Basins, Pennsylvania, West Virginia, New York and Maryland, 1996-98 /

Vydáno 2000

Water quality in the Lake Erie-Lake Saint Clair Drainages, Michogan, Ohio, Indiana, New York and Pensylvania, 1996-98 /

Vydáno 2000

Magnetite deposits of the Cornwall type in Pennsylvania /

Autor Spencer, Arthur C. 1871-1964
Vydáno 1908

Illinoian outwash in southeastern Pennsylvania /

Autor Lockwood W. N., Meisler, Harold, 1931-1991
Vydáno 1960

Geology of rocks of Pennsylvanian age in the southern half of the Tremont quadrangle Schuylkill County, Pennsylvania /

Autor Wood, Gordon H., Trexler, J. Peter, Yelenosky, Andy, Soren, Julian
Vydáno 1962

Geology and uranium occurrences of the Northern Half of the Lehighton, Pennsylvania, quadrangle and adjoining areas /

Autor Klemic, Harry, 1920-, Warman, James C., Taylor, Alfred R., 1928-2021
Vydáno 1963

Coal resources of Beaver County, Pennsylvania /

Autor Patterson, Elmer D.
Vydáno 1963

Coal resources of Lawrence County, Pennsylvania /

Autor Van Lieu, J. A., Patterson, Elmer D.
Vydáno 1964

On seedlike structures associated with Archaeopteris, from the Upper Devonian of Northern Pennsylvania /

Autor Arnold, Chester A. 1901-1977
Vydáno 1935

Drainage basins, channels, and flow characteristics of selected streams in central Pennsylvania /

Autor Brush, Lucien M.
Vydáno 1961

Surficial geology and geomorphology of Potter County, Pennsylvania /

Autor Denny, Charles Storrow, 1911-1999
Vydáno 1956

Effect of agricultural land use on ground-water quality in a small Pennsylvania watershed /

Autor Pionke, Harry B., Urban, James B.
Vydáno 1985

Uranium occurrences in sedimentary rocks of Pennsylvania : contributions to the geology of uranium /

Autor Klemic, Harry, 1920-
Vydáno 1962

Guide to the mammals of Pennsylvania /

Autor Merritt, Joseph F., 1945-
Vydáno 1987

International Geological Congress : XVI. session, United States, 1933. Guidebook 20: Excursion C-2, Pennsylvanian of the northern mid-continent region /

Autor Moore, Raymond Cecil, 1892-1974
Vydáno 1932

Upper Pennsylvanian and Lower Permian fusulinids from north-central Texas /

Autor Kauffman, A. E., Roth, R. I.
Vydáno 1966

Ostracoda from the Permian of the Glass Mountains, Texas : a shorter contribution to general geology /

Autor Sohn, I. G. 1911-2000
Vydáno 1954

Floras of the Pocono formation and Price sandstone in parts of Pennsylvania, Maryland, West Virginia, and Virginia, including descriptions of 22 new species, 1 new genus, and 4 new combinations of Mississippian age /

Autor Read, C. B., 1907-1979
Vydáno 1955

Chromite and other mineral deposits in serpentine rocks of the Piedmont Upland, Maryland, Pennsylvania and Delaware /

Autor Pearre, Nancy C., Heyl, Allen V. 1918-2008
Vydáno 1960

International Geological Congress : XVI. session, United States, 1933. Guidebook 8: Excursion A-8, Mineral deposits of New Jersey and eastern Pennsylvania /

Vydáno 1932