Principal soils of Iowa [their formation and properties.
Subtitle: Prepared by William R. Oschwald and others.  Soil Conservation Service, U.S. Dept. of Agriculture, cooperating]
Contributors: Oschwald, William R
Publisher: Iowa State University of Science and Technology, Cooperative Extension Service
Published: 1965
Place of publication: Ames, Iowa
Language: eng
Number of pages: 76
Subjects: Soil formation; Soils -- Iowa