Columbia subject headings:
Europe--Foreign relations--Persian Gulf Region.
Persian Gulf Region--Foreign relations--Europe.
Petroleum industry and trade--Political aspects--Europe.
Petroleum industry and trade--Political aspects--Persian Gulf Region.
World politics--1945-1989.
Harvard subject headings:
Europe--Foreign relations--Persian Gulf Region.
Persian Gulf Region--Foreign relations--Europe.
Petroleum industry and trade--Political aspects--Europe.
Petroleum industry and trade--Political aspects--Persian Gulf Region.
World politics--1945-
World politics--1945-1989
Princeton subject headings:
Europe--Foreign relations--Persian Gulf Region.
Persian Gulf Region--Foreign relations--Europe.
Petroleum industry and trade--Political aspects--Europe.
Petroleum industry and trade--Political aspects--Persian Gulf Region.
World politics--1945-1989.