Columbia subject headings:
Harvard subject headings:
Environmental law--United States
Environmental law--United States--Criminal provisions.
Federal government--United States
Law enforcement--United States
Liability for environmental damages--United States.
Offenses against the environment--Law and legislation--United States.
Princeton subject headings:
Environmental law--United States--Criminal provisions.
Environmental law--United States.
Law enforcement--United States.
Liability for environmental damages--United States.