Columbia subject headings:
Harvard subject headings:
Great Britain--Foreign relations--1945-
Great Britain--Foreign relations--Yemen, South.
Protectorate of South Arabia--History.
Yemen (People's Democratic Republic)--Foreign relations--Great Britain.
Yemen, South--History.
Princeton subject headings:
Aden (Protectorate)--History.
Aden--Foreign relations--Great Britain.
Great Britain--Foreign relations--1945-
Great Britain--Foreign relations--Aden.