List of References

  1. "A Hidden Treasure: Instructional Materials for Ground Water Resource Protection", National Vocational Agriculture Teachers Association, National FFA Foundation, Madison, WI.

  2. "Agriculture and Ground Water Quality - A Collection of Papers", University Center for Water Research, Oklahoma State University, 003 Life Sciences East, Stillwater, Oklahoma, 1989.

  3. "Designing Facilities for Pesticide and Fertilizer Containment", Midwest Plan Service, Agricultural Engineering, 122 Davidson Hall, Iowa State University, Ames, Iowa, 1990.

  4. "Fertilizer Storage and Handling Practices", The Farmstead Assessment System worksheet # 3, Environmental Resources Center, School of Natural Resources, College of Agricultural and Life Sciences, University of Wisconsin-Madison, Madison, Wisconsin.

  5. "Protecting Ground Water: Pesticides and Agricultural Practices", U.S. Environmental Protection Agency, Office of Ground Water Protection, 401 M Street, S.W., Washington, D.C., 1988.

  6. "Reducing the Risk of Ground Water Contamination by Improving Fertilizer Storage and Handling", The Farmstead Assessment System worksheet # 3, Environmental Resources Center, School of Natural Resources, College of Agricultural and Life Sciences, University of Wisconsin-Madison, Madison, Wisconsin.

  7. "Protect Your Ground Water", Farm Journal.

  8. "Safety Devices for Applying Liquid Chemicals Through Irrigation Systems", American Society of Agricultural Engineers (ASAE), Irrigation Management Committee, 1980.

  9. "Hydrogeologic and Water Quality Investigations in the Big Spring Basin, Clayton County, Iowa", G.R. Hallberg, R.D. Libra, E.A. Bettis III, and B.E. Hoyer, Open File Report 84-4, Iowa Geological Survey, Iowa City, Iowa, 1984.

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