Columbia subject headings:
Harvard subject headings:
Bahrain--Relations--Iraq.
Iraq--Relations--Bahrain.
Iraq--Relations--Oman.
Iraq--Relations--Persian Gulf States.
Oman--Relations--Iraq.
Persian Gulf States--Relations--Iraq.
Princeton subject headings:
Bahrain--Relations--Iraq.
Iraq--Relations--Bahrain.
Iraq--Relations--Oman.
Iraq--Relations--Persian Gulf States.
Oman--Relations--Iraq.
Persian Gulf States--Relations--Iraq.