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2023 Donald L. Sparks Distinguished Lecture - Dr…
2023 Donald L. Sparks Distinguished Lecture - Dr Mary K. Firestone
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2020 Donald L. Sparks Distinguished Lecture -…
2020 Donald L. Sparks Distinguished Lecture - Scott Fendorf
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2022 Donald L. Sparks Distinguished Lecture -…
2022 Donald L. Sparks Distinguished Lecture - Mary Beth Kirkham
Mary Beth Kirkham, Distinguished Professor at Kansas State University, delivers the 2022 Donald L. Sparks Distinguished Lecture in Soil and Environmental Sciences