Columbia subject headings:
Chemicals--Safety measures.
Insecticides--Toxicology.
Organochlorine compounds--Toxicology.
Harvard subject headings:
Chemicals--Safety measures
Insecticides--Toxicology.
Organochlorine compounds--Toxicology.
Princeton subject headings:
Endrin--Toxicity.
Environmental exposure.
Insecticides--Environmental aspects.
Insecticides--Physiological effect.
Insecticides--Toxicology.
Organochlorine compounds.