Columbia subject headings:
Energy policy--United States.
Environmental policy--United States.
Natural resources--Government policy--United States.
Policy sciences.
United States--Social policy--1980-1993.
Harvard subject headings:
Energy policy--United States
Environmental policy--United States
Natural resources--Government policy--United States
Policy sciences.
United States--Social policy--1980-1993.
Princeton subject headings:
Energy policy--United States.
Environmental policy--United States.
Natural resources--Government policy--United States.
Policy sciences.
United States--Social policy--1980-1993.