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Citation
Shafik, M. T., Hazel C. Sullivan, and H. F. Enos. 1971. “A Method for Determination of Low Levels of Exposure to 2,4-D and 2,4,5-T.” Special Collections, USDA National Agricultural Library. Accessed September 20, 2026, https://www.nal.usda.gov/exhibits/speccoll/items/show/2100.
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