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

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

Autor Klemic, Harry, 1920-
Vydáno 1962

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

Magnetite deposits of the Cornwall type in Pennsylvania /

Autor Spencer, Arthur C. 1871-1964
Vydáno 1908