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Soil survey of Des Moines County, Iowa : [by Melvin D. Brown] ; United States Department of Agriculture, Soil Conservation Service in cooperation with the Iowa Agriculture and Home Economics Experiment Station; the Cooperative Extension Service, Iowa State University ... [et al.]
- "Soil survey of Des Moines County, Iowa"
- "Soil Survey of Des Moines County, Iowa"
- "Soil survey of Des Moines County, Iowa : [by Melvin D. Brown] ; United States Department of Agriculture, Soil Conservation Service in cooperation with the Iowa Agriculture and Home Economics Experiment Station; the Cooperative Extension Service, Iowa State University ... [et al.]"@en