Columbia subject headings:
Energy industries--Political aspects--Europe.
Energy industries--Political aspects--Soviet Union.
Europe--Foreign relations--Soviet Union.
Europe--Foreign relations--United States.
Soviet Union--Foreign relations--Europe.
United States--Foreign relations--Europe.
Harvard subject headings:
Energy industries--Political aspects--Europe.
Energy industries--Political aspects--Soviet Union.
Europe--Foreign relations--Soviet Union.
Europe--Foreign relations--United States.
Soviet Union--Foreign relations--Europe.
United States--Foreign relations--Europe.
Princeton subject headings:
Energy industries--Political aspects--Europe.
Energy industries--Political aspects--Soviet Union.
Europe--Foreign relations--Soviet Union.
Europe--Foreign relations--United States.
Soviet Union--Foreign relations--Europe.
United States--Foreign relations--Europe.