Columbia subject headings:
Henderson, Edward.
Iraq Petroleum Company.
Oman--History.
Petroleum--Oman.
Petroleum--United Arab Emirates.
United Arab Emirates--History.
Harvard subject headings:
Arab countries--History--20th century.
Princeton subject headings:
Henderson, Edward.
Iraq Petroleum Company.
Oman--History.
Petroleum--Oman.
Petroleum--United Arab Emirates.
United Arab Emirates--History.