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The base of the Upper Jurassic Morrison Formation in east-central Utah

O'Sullivan, Robert Brett, 1923- author.
[Reston, Va.] : United States Department of the Interior, U.S. Geological Survey, 1984. 1985

Coughs Creek Tongue -- a new tongue of the Eocene Green River Formation, Piceance Creek basin, Color

O'Sullivan, Robert Brett, 1923- author.
[Reston, Va.] : United States Department of the Interior, Geological Survey, 1975. 1975

Four newly named tongues of Eocene Green River Formation, northern Piceance Creek basin, Colorado,

Duncan, Donald C., 1911-1990 author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1974. 1974

Geology of the Cedar Mesa-Boundary Butte area, San Juan County, Utah

O'Sullivan, Robert Brett, 1923- author.
Washington, D.C. : United States Department of the Interior, Geological Survey, 1965. 1965

Marine trace fossils in the Upper Jurassic Bluff Sandstone, southeastern Utah

O'Sullivan, Robert Brett, 1923- author.
[Reston, Va.] : United States Department of the Interior, Geological Survey, 1975. 1975

American organic : a cultural history of farming, gardening, shopping, and eating

O'Sullivan, Robin, author.
Lawrence, Kansas : University Press of Kansas, 2015. 2015