Columbia subject headings:
Algicides--Environmental aspects--United States.
Algicides--Toxicology--United States.
Bactericides--Environmental aspects--United States.
Bactericides--Toxicology--United States.
Fungicides--Environmental aspects--United States.
Fungicides--Toxicology--United States.
Pesticides--Environmental aspects--United States.
Pesticides--Toxicology--United States.
Harvard subject headings:
Algicides--Environmental aspects--United States.
Algicides--Toxicology--United States.
Bactericides--Environmental aspects--United States.
Bactericides--Toxicology--United States.
Fungicides--Environmental aspects--United States.
Fungicides--Toxicology--United States.
Pesticides--Environmental aspects--United States
Pesticides--Toxicology--United States.
Princeton subject headings:
Algicides--Environmental aspects--United States.
Algicides--Toxicology--United States.
Bactericides--Environmental aspects--United States.
Bactericides--Toxicology--United States.
Fungicides--Environmental aspects--United States.
Fungicides--Toxicology--United States.
Pesticides--Environmental aspects--United States.
Pesticides--Toxicology--United States.