Insecticide residues in some components of the St. Lawrence River ecosystem following applications of DDD.
D000818:Animals; D002170:Canada; D003634:DDT / Q000032:analysis; D003632:Dichlorodiphenyldichloroethane / Q000032:analysis; D005399:Fishes / Q000032:analysis; D007306:Insecticides / Q000032:analysis*; D008974:Mollusca / Q000032:analysis; D012908:Snails / Q000032:analysis; D014867:Water / Q000032:analysis
D007306:Insecticides; D014867:Water; D003634:DDT; D003632:Dichlorodiphenyldichloroethane