Mansfield, George Rogers, 1875-1947.
Revision of the Beckwith and Bear River formations of southeastern Idaho / by G.R. Mansfield and P.V. Roundy.
Washington, Govt. Print. Off., 1916.
"Published June 3, 1916."
Includes bibliographical references.
Geology -- Idaho.
Geology, Stratigraphic -- Mesozoic.
Roundy, P. V. (Paul Vere), 1884-1937.
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