The Grenola formation /

by Condra, Geo. E. (George Evert), 1869-1958

The Missouri Valley traverse in Iowa, north of the Jones Point deformation /

by Condra, Geo. E. (George Evert), 1869-1958

Faunal lists of the Tertiary vertebrata of Nebraska and adjacent areas /

by Cook, Harold James, 1887-

Groundwater level survey in Nebraska /

by Waite, Herbert Ames, 1910-
Published 1935

Geologic cross-section, Forest City, Missouri to Du Bois, Nebraska /

by Condra, Geo. E. (George Evert), 1869-1958
Published 1935

Water-bearing formations of Nebraska /

by Condra, Geo. E. (George Evert), 1869-1958
Published 1936

Upper Carboniferous formations in the Lower Platte Valley /

by Condra, Geo. E. (George Evert), 1869-1958
Published 1939

Geological phases of soil erosion investigation and control in Nebraska /

by Condra, Geo. E. (George Evert), 1869-1958

Correlation of the Amerada Petroleum Company well drilled near Nehawka, Nebraska /

by Condra, Geo. E. (George Evert), 1869-1958
Published 1939

Correlation of formations drilled in the Midland Forster well near Fremont, Nebraska /

by Reed, E. C. (Eugene Clifton), 1901-
Published 1938

The Redfield anticline of Nebraska and Iowa /

by Condra, Geo. E. (George Evert), 1869-1958
Published 1938

The Ostracoda of the Missouri series in Nebraska /

by Johnson, William Russell, 1905-
Published 1936