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(2021) County Weed Commissioner Minimum Standards, January 14, 2021. Agriculture and Land Stewardship
(2020) Distributing a Fertilizer or Soil Conditioner in Iowa, November 9, 2020. Agriculture and Land Stewardship
(2020) Commercial Feed and Fertilizer Bureau On Farm Fertilizer Storage, February 2020. Agriculture and Land Stewardship
(2005) Designation of Co-benefits and Its Implication for Policy: Water Quality versus Carbon Sequestration in Agricultural Soils, March 2005. Iowa State University
(2005) Synthesis of Nondestructive Testing Technologies for Geomaterial Applications, May 2005. Iowa State University
(2005) Tillage Management and Soil Organic Matter, 2005. Iowa State University
(2003) Soil and Water Conservation; Conservation Program Summary, 2003. Agriculture and Land Stewardship
(2002) Cropping Practices Baseline Data, 2002. Agriculture and Land Stewardship
(2002) Iowa Soil Properties and Interpretation Database, 2002. Agriculture and Land Stewardship
(2002) Soil and Water Conservation; Conservation Program Summary, 2002. Agriculture and Land Stewardship
(2002) Strip Tillage Effects on Crop Production and Soil Erosion, 2002. Agriculture and Land Stewardship
(2001) Hub/Spokes Nutrient Management Model, 2001. Agriculture and Land Stewardship
(1983) The Economics of Soil and Water Conservation Practices in Iowa: Results and Discussion, February 1983. Iowa State University
(1983) Effects of Livestock Enterprises on the Economics of Soil and Water Conservation Practices in Iowa, March 1983. Iowa State University
(1983) Programmed Interrelationships between Soil Loss and Exports, February 1983. Iowa State University
(1982) The Economics of Soil and Water Conservation Practices in Iowa: Model and Data Documentation, August 1982. Iowa State University
(1980) State Cost-Sharing for Soil Conservation in Iowa, 1980. Iowa State University
(1975) Weed Control Guide for 1975 prepared by Vivan M. Jennings, January 1975. Iowa State University Extension
(1975) Iowa-Cedar Rivers Basin Study, Iowa and Minnesota: Drainage Report of the Iowa-Cedar Rivers Basin prepared by United States Department of Agriculture, Soil Conservation Service, Economic Research Service, 1975. Agriculture and Land Stewardship
(1974) Models of Soil Loss, Land and Water Use, Spatial Agricultural Structure, and The Environment, July 1974. Iowa State University
(1974) State Cost Sharing for Soil Conservation in Iowa, January 1974. Iowa State University Extension
(1972) Iowa's New Conservancy Districts and Soil Loss Limit Regulations, June 1972. Iowa State University
(1967) Erosion Control Factors and the Universal Soil Loss Equation, December 1967. Iowa State University Extension
(1967) Principles and Methods of Wind-Erosion Control in Iowa, May 1967. Iowa State University
(1966) Physiographic History and the Soils, Entrenched Stream Systems, and Gullies, Harrison County, Iowa, 1966. Agriculture and Land Stewardship
(1962) Soil Erosion and Some Means for its Control by R. Burnell Held: Special Report No. 29, August 1962. Iowa State University Extension
(1961) Soil Erosion Control in Western Iowa, Progress and Problems, October 1961. Iowa State University
(1961) It's your soil too!, 1961. Iowa State University Extension
(1958) Soil Erosion Control in Process in Western Iowa by R. Burnell Held and John F. Timmons, August 1958. Iowa State University
(1957) Economic Evaluation of Use of Soil Conservation and Improvement Practices in Western Iowa, 1957. Agriculture and Land Stewardship
(1924) Soil Survey of Iowa. Report no. 34, Boone County soils, 1924. Iowa State University
(2009) Iowa CREP News, March 18, 2009, Issue 3. Agriculture and Land Stewardship
(2008) Working with Iowans building a culture of conservation, Program Summary, November 2008. Agriculture and Land Stewardship
(2007) Iowa CREP News, October 29, 2007, Issue. 2. Agriculture and Land Stewardship
(2007) Division of Soil Conservation Soil and Water Quality Review, October 2007. Agriculture and Land Stewardship
(2007) Soil and Water Conservation Quality Review, 2007. Agriculture and Land Stewardship
(2007) Iowa CREP News, February 1, 2007, Issue 1. Agriculture and Land Stewardship
(2012) The world beneath your feet : a closer look at soil and roots / by Mark Mϋller. Transportation, Department of
(1969) Implementing the Conservation Title of the Food Security Act of 1985: A field-oriented assessment/ by the Soil and Water Conservation Society, 1990. Natural Resources, Department of
(1969) Resource conservation in Iowa. Natural Resources, Department of
(1936) Soil Erosion in Iowa. Agriculture and Land Stewardship
(2013) Native Grassland Conversion: the Roles of Risk Intervention and Switching Costs. Iowa State University
