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in 2003, and returned to Iowa State as a faculty member. At ISU, Helmers holds the Dean's
Professorship in the College of Agriculture and Life Sciences.
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112:. Iowa Nutrient Research Center, Iowa State University College of Agricultural and Life Sciences
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134:. Iowa State University Department of Agricultural and Biosystems Engineering
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Helmers earned his bachelor's degree in civil engineering from
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and pursued master's level study in the same field at
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136:. Retrieved
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