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Toxic Air Contaminant Program
DEF (S,S,S-tributyl phosphorotrithioate) Application and
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- Pilot Analysis of DEF in Air (PDF, 852 kb) December 1988
- Determination of Airborn Residues From Four Harvest Aid Chemicals (DEF, Folex, Cacodylates, and Paraquat) at Treated San Joaquin Valley Cotton Field Sites, as a Measure of Potential Human Exposure (PDF, 1.6 mb) April 1983
- Drift Studies From the Aerial Application of DEF and Folex in Fresno and Merced Counties, California 1979. (PDF, 1.6 mb) EH 80-04, March 1980