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Archeogastropoda, Mesogastropooda and stratigraphy of the Ripley, Owl Creek, and Prairie Bluff forma

Sohl, Norman F. (Norman Frederick), 1924-
Washington : U.S. G.P.O., 1960. 1960

Biostratigraphy of the Middendorf Formation (Upper Cretaceous) in a corehole at Myrtle Beach, South

Gohn, Gregory S., author.
Washington, D.C. : U.S. G.P.O. ; Denver, CO : For slae by Books and Open-File Report Sales, U.S. Geological Survey, 1992. 1992

The Black Creek-Peedee formational contact (Upper Cretaceous) in the Cape Fear River region of North

Sohl, Norman F. (Norman Frederick), 1924-
[Reston, Va?] : U.S. Dept..of the Interior, Geological Survey ; Alexandria, VA : For sale by the Distribution Branch, USGS, 1983. 1983

Changes in stratigraphic nomenclature by the U.S. Geological Survey, 1976

Sohl, Norman F. (Norman Frederick), 1924-
Washington : Dept. of the Interior, Geological Survey : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1977. 1977

Changes in stratigraphic nomenclature by the U.S. Geological Survey, 1979

Sohl, Norman F. (Norman Frederick), 1924-
Washington : U.S. Govt. Print. Off., 1980. 1980

Cretaceous Actaeonellid gastropods from the western hemisphere

Sohl, Norman F. (Norman Frederick), 1924-
[Reston, Va.?] : U.S. Dept. of the Interior, U.S. Geological Survey ; Alexandria, VA : For sale by the Distribution Branch, USGS, 1985. 1985

Gastropods from the Coffee Sand (upper Cretaceous) of Mississippi : late Cretaceous gastropods in Te

Sohl, Norman F. (Norman Frederick), 1924-
Washington : U.S. G.P.O., 1964. 1964

Giant Upper Cretaceous oysters from the Gulf coast and Caribbean,

Sohl, Norman F. (Norman Frederick), 1924-
Washington, U.S. Govt. Print. Off., 1964. 1964

Marine Jurassic gastropods, central and southern Utah.

Sohl, Norman F. (Norman Frederick), 1924-
Washington, U.S. Govt. Print. Off., 1965. 1965

Neogastropoda, opisthobrachia and basommatophora from the Ripley, Owl Creek, and Prairie Bluff forma

Sohl, Norman F. (Norman Frederick), 1924-
Washington, D.C. : U.S. Govt. Print. Off., 1964. 1964

New Upper Cretaceous Amphineura (Mollusca)

Smith, Allyn G., 1893-1976.
Washington, U.S. Govt. Print. Off., 1968. 1968

Upper Cretaceous gastropods from the Pierre Shale at Red Bird, Wyoming

Sohl, Norman F. (Norman Frederick), 1924-
Washington : U.S. Govt. Print. Off., 1967. 1967