Columbia subject headings:
Air--Pollution--Law and legislation--United States.
Water--Pollution--Law and legislation--United States.
Harvard subject headings:
Air--Pollution--Law and legislation--United States
Environmental impact charges--United States
Water--Pollution--Law and legislation--United States
Princeton subject headings:
Air--Pollution--Law and legislation--United States.
Environmental impact charges--United States.
Water--Pollution--Law and legislation--United States.