| B.A., Anthropology, Grinnell College, Iowa, 1973 |
| M.A., Anthropology, University of Pennsylvania, 1976 |
| M.S., Agriculture, California Polytechnic State Univ., San Luis Obispo, 1983 Thesis Title: Clay Mineralogy and Amorphous Content of a Volcanic Ash Soil from the Lassen National Forest |
| Ph.D., Soil Science, University of California, Riverside, 1987 Thesis Title: Proton and Copper Adsorption to Maize and Soybean Root Cell Walls |
| American Society of Agronomy
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| American Society of Plant Physiologists
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| Institute for Alternative Agriculture
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| Sigma Delta Epsilon (Graduate Women in Science)
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| Soil Science Society of America
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| Soil and Water Conservation Society
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| 1999 - present Professor, Department of soil, Water, and Climate, University of Minnesota.
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| 1993 - 1999 Associate Professor, Department of Soil, Water, and Climate, University of Minnesota.
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| 1987 - 1993 Assistant Professor, Soil Science Department, University of Minnesota.
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| 1983 - 1987 Research Assistant, Soil and Environmental Sciences Department, University of California, Riverside.
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| 1982 Soil Scientist, FIR Research Project, Oregon State University.
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| 1980 - 1981 Biological Technician (Soils), U.S. Forest Service, Shasta-Trinity and Lassen National Forests, (Summers).
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| 1981 Laboratory Instructor, Soil Science Dept., Cal Poly State Univ.
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| 1979 - 1982 Research Assistant, Soil Science Dept., Cal Poly State Univ. |
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