Columbia subject headings:
Cancer--Environmental aspects--United States.
Cancer--Law and legislation--United States.
Carcinogens--Safety regulations--United States.
Pollution--Law and legislation--United States.
Harvard subject headings:
Cancer--Environmental aspects--United States.
Cancer--Law and legislation--United States
Carcinogens--Safety regulations--United States.
Pollution--Law and legislation--United States
Princeton subject headings:
Cancer--Environmental aspects--United States.
Cancer--Law and legislation--United States.
Carcinogens--Safety regulations--United States.
Pollution--Law and legislation--United States.