Showing 1 - 3 of 3 for search: 'Tychsen, P. C. 1916-', query time: 0.06s
by Tychsen, P. C. 1916-
Published: U.S. Dept. of the Interior, Geological Survey, 1950
Description: iv, 59 pages : illustrations, graphs, maps (1 folded in pocket) ; 27 cm.
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by Tychsen, P. C. 1916-
Published: United States Department of the Interior, Geological Survey, 1950
Description: 1 online resource (iv, 59 pages) : illustrations, maps + 1 plate.
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by Agnew, Allen F., 1918-2012.
Published: Science Center, University of South Dakota, 1965
Description: 195 pages : maps ; 28 cm.
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Groundwater Water quality Geology, Stratigraphic Heart River (N.D.) Irrigation Rivers Irrigation