Columbia subject headings:
Environmental law--United States--Criminal provisions.
Environmental policy--United States.
Offenses against the environment--United States--Prevention.
Harvard subject headings:
Environmental law--United States--Criminal provisions.
Environmental policy--United States
Offenses against the environment--Law and legislation--United States.
Offenses against the environment--United States--Prevention.
Princeton subject headings:
Environmental law--United States--Criminal provisions.
Environmental protection--Government policy--United States.
Offenses against the environment--United States--Prevention.