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Concepcion and Palma Escrita Formations, western Puerto Rico

McIntyre, David H., author.
[Washington, D.C.] : United States Department of the Interior, U.S. Geological Survey, 1974. 1974

The contact of the Fox Hills and Lance formations

Dobbin, C. E. (Carroll Edward), 1892-1967, author.
Washington : Department of the Interior, U.S. Geological Survey, 1929. 1929

Correlation of geologic formations between east-central Colorado, central Wyoming and southern Monta

Lee, Willis T. (Willis Thomas), 1864-1926 author.
Washington : Department of the Interior, U.S. Geological Survey, 1927. 1927

Depositional environments of coal-bearing and associated formations of Cretaceous age in the Nationa

Roehler, Henry W., author.
[Reston, Va.] : Department of the Interior, U.S. Geological Survey, 1987. 1987

The fauna of the cannonball marine member of the Lance Formation

Stanton, T. W. (Timothy William), 1860-1953 author.
[Washington] : [Department of the Interior, United States Geological Survey], [1921] 1921

The flora of the Denver and associated formations of Colorado

Knowlton, Frank Hall, 1860-1926 author.
Washington : United States Department of the Interior, Geological Survey, 1930. 1930

The flora of the Ripley formation

Berry, Edward Wilber, 1875-1945 author.
Washington : Department of the Interior, United States Geological Survey, 1925. 1925

Lithology and uranium potential of Jurassic formations in the San Ysidro-Cuba and Majors Ranch areas

Santos, Elmer S., author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1975. 1975

New Cretaceous formations in the western Wyoming thrust belt

Rubey, William Walden, 1898-1974, author.
[Washington, D.C.] : United States Department of the Interior, U.S. Geological Survey, 1973. 1973

Paleozoic formations of the Mosquito Range, Colorado

Johnson, J. Harlan (Jesse Harlan), 1892-1974 author.
Washington : United States Department of the Interior, United States Geological Survey, 1934. 1935

Pennsylvanian formations of southwest Virginia

Miller, Ralph L. (Ralph LeRoy), 1909-1991, author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1969. 1969

The physical conditions and age indicated by the flora of the Alum Bluff formation

Berry, Edward Wilber, 1875-1945 author.
[Washington] : [Department of the Interior, United States Geological Survey], [1917] 1916

Relations of late Paleozoic and early Mesozoic formations of southwestern Montana and adjacent parts

Condit, D. Dale (Daniel Dale), 1886- author.
[Washington] : [Department of the Interior, United States Geological Survey], [1919] 1918

Relations of the Wasatch and Green River formations in northwestern Colorado and southern Wyoming wi

Sears, Julian D. (Julian Ducker), 1891- author.
[Washington] : [Department of the Interior, United States Geological Survey], [1925] 1924

Revision of stratigraphic names for some Eocene formations in Santa Barbara and Ventura counties, Ca

Vedder, J. G. (John Graham), 1926- author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1972. 1972

Revision of the Beckwith and Bear River formations of southeastern Idaho

Mansfield, George Rogers, 1875-1947 author.
[Washington] : [Department of the Interior, United States Geological Survey], [1916] 1916

A section of the Paleozoic formations of the Grand Canyon at the Bass Trail

Noble, L. F. (Levi Fatzinger), 1882-1965 author.
[Washington] : [Department of the Interior, United States Geological Survey], [1923] 1922

Silurian, Devonian, and Mississippian Formations of the Funeral Mountains in the Ryan Quadrangle, De

McAllister, James F. (James Franklin), 1911- author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1974. 1974

Stratigraphic framework of the Alaska Peninsula

Detterman, Robert L., author.
[Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 1996. 1996

Stratigraphic studies in southwestern Montana and adjacent Idaho--lower Tertiary Anaconda Conglomera

Reston, Va. : U.S. Geological Survey, 2005. 2005

Stratigraphy of the Bois Blanc Formation in New York

Oliver, William Albert, 1926-2005 author.
Washington : United States Department of the Interior, Geological Survey, 1967. 1967