Citation
Unknown. 1978. “Proposed Tolerances for the Pesticide Chemical Malathion; Proposed Tolerances for the Pesticide Chemical 5-ethoxy-3-trichloro-methyl-1,2,4-thiadiazole.” Special Collections, USDA National Agricultural Library. Accessed December 12, 2024, https://www.nal.usda.gov/exhibits/speccoll/items/show/1410.