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Citation
Frank, Richard, George J. Sirons, and Brian D. Ripley. 1979. “Water: Herbicide Contamination and Decontamination of Water Wells in Ontario, Canada, 1969-1978.” Special Collections, USDA National Agricultural Library. Accessed December 10, 2025, https://www.nal.usda.gov/exhibits/speccoll/items/show/4242.
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