Columbia subject headings:
Chlordan--Environmental aspects.
Chlordan--Physiological effect.
Chlordan--Toxicology.
Harvard subject headings:
Chlordan--Environmental aspects.
Chlordan--Physiological effect.
Chlordan--Toxicology.
Princeton subject headings:
Chlordan--Environmental aspects.
Chlordan--Toxicology.
Pesticides--Environmental aspects.
Pesticides--Toxicology.