Columbia subject headings:
Energy policy--Europe.
Energy policy--United States.
Europe--Foreign relations--1945-
Organization of Petroleum Exporting Countries.
Petroleum industry and trade.
United States--Foreign relations--1977-1981.
Harvard subject headings:
Energy policy--Europe
Energy policy--United States
Europe--Foreign relations--1945-
Organization of Petroleum Exporting Countries.
Petroleum industry and trade.
United States--Foreign relations--1977-1981.
Princeton subject headings:
Energy policy--Europe.
Energy policy--United States.
Europe--Foreign relations--1945-
Organization of Petroleum Exporting Countries.
Petroleum industry and trade.
United States--Foreign relations--1977-.