Ruhe, Robert V., 1918-

Landscape evolution and soil formation in southwestern Iowa / Robert V. Ruhe, Raymond B. Daniels, and John G. Cady. - Washington : U.S. Dept. of Agriculture, 1967. - 242 p. : ill., maps ; 23 cm. - Technical bulletin (United States. Department of Agriculture) ; no. 1349. .

Bibliography: p. 225-231.

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Soil formation--Iowa.
Geomorphology--Iowa.
Soils--Iowa.

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