Columbia subject headings:
British--Persian Gulf Region--History--19th century.
Great Britain--Colonies--Asia--History--19th century.
Great Britain--Foreign relations--Persian Gulf Region.
Imperialism--History--19th century.
Persian Gulf Region--Foreign relations--Great Britain.
Persian Gulf Region--History--19th century.
Persian Gulf Region--Strategic aspects--History--19th century.
Harvard subject headings:
British--Persian Gulf Region--History--19th century.
Great Britain--Colonies--Asia--History--19th century.
Great Britain--Foreign relations--Persian Gulf Region.
Imperialism--History--19th century
Persian Gulf Region--Foreign relations--Great Britain.
Persian Gulf Region--History--19th century.
Persian Gulf Region--Strategic aspects--History--19th century.
Princeton subject headings: