Columbia subject headings:
Agricultural pests--Control--United States--History.
Pesticides--Environmental aspects.
Pesticides--Toxicology.
Harvard subject headings:
Pesticides
Pesticides--Environmental aspects
Pesticides--History.
Pesticides--Law and legislation
Pesticides--Toxicology
Toxicology
Princeton subject headings:
Pesticides--Environmental aspects.
Pesticides--History.
Pesticides--Toxicology.