Columbia subject headings:
Egypt--Foreign relations--Saudi Arabia.
Saudi Arabia--Foreign relations--Egypt.
Yemen (Republic)--History--1962-1972.
Harvard subject headings:
Egypt--Foreign relations--Saudi Arabia.
Saudi Arabia--Foreign relations--Egypt.
Yemen (Arab Republic)--History--1962-1970.
Princeton subject headings:
Egypt--Foreign relations--Saudi Arabia.
Saudi Arabia--Foreign relations--Egypt.
Yemen--History--1962-