Columbia subject headings:
Insecticides--Environmental aspects.
Insecticides--Physiological effect.
Insecticides--Toxicology.
Organophosphorus compounds--Environmental aspects.
Organophosphorus compounds--Physiological effect.
Organophosphorus compounds--Toxicology.
Harvard subject headings:
Insecticides--Environmental aspects.
Insecticides--Physiological effect.
Insecticides--Toxicology.
Organophosphorus compounds--Environmental aspects.
Organophosphorus compounds--Physiological effect.
Organophosphorus compounds--Toxicology.
Princeton subject headings:
Insecticides--Environmental aspects.
Insecticides--Physiological effect.
Insecticides--Toxicology.
Organophosphorus compounds--Environmental aspects.
Organophosphorus compounds--Physiological effect.
Organophosphorus compounds--Toxicology.