Citation
Unknown. 1965. “Federal Specification: Herbicide: DMPA (O-(2,4-Dichlorophenyl) O-Methyl Isopropylphosphoramidothioate), O-H-201a.” Special Collections, USDA National Agricultural Library. Accessed September 2, 2024, https://www.nal.usda.gov/exhibits/speccoll/items/show/1394.