The problem of organic phosphorus insecticides in Czechoslovakia.
D003604:Czechoslovakia; D007306:Insecticides / Q000633:toxicity*; D010278:Parathion / Q000633:toxicity*; D010758:Phosphorus
D007306:Insecticides; D010758:Phosphorus; D010278:Parathion
INSECTICIDES/toxicity; PARATHION/toxicity