Columbia subject headings:
Pyrethrins--Environmental aspects.
Pyrethrins--Physiological effect.
Pyrethrins--Toxicology.
Pyrethroids--Environmental aspects.
Pyrethroids--Physiological effect.
Pyrethroids--Toxicology.
Harvard subject headings:
Pyrethrins--Environmental aspects.
Pyrethrins--Physiological effect.
Pyrethrins--Toxicology.
Pyrethroids--Environmental aspects.
Pyrethroids--Physiological effect.
Pyrethroids--Toxicology.
Princeton subject headings: