Landscape evolution and soil formation in southwestern Iowa Ruhe, Robert V. 1918- creator Daniels, Raymond Bryant 1925- Cady, John G. 1914- United States Soil Conservation Service. text bibliography dcu Washington U.S. Dept. of Agriculture 1967 monographic eng
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242 p. : ill., maps ; 23 cm. Robert V. Ruhe, Raymond B. Daniels, and John G. Cady. Bibliography: p. 225-231. n-us-ia Soil formation Iowa Geomorphology Iowa Soils Iowa S21 .A72 no. 1349 631.4/7/7777 Technical bulletin (United States. Department of Agriculture) ; no. 1349 agr67000325 DLC 830516 20260227111027.0 agr67000325