https://www.epa.gov/history/epa-history-ddt-dichloro-diphenyl-trichloroethane
EPA History: DDT (dichloro-diphenyl-trichloroethane) | US EPA
Nov 6, 2025 - Links to Reports, Articles and Press Releases on DDT (dichloro-diphenyl-trichloroethane), its history, and its status
epa historyddtus