Columbia subject headings:
Arab countries--Antiquities--Congresses.
Arab countries--Relations--Horn of Africa--Congresses.
Horn of Africa--Antiquities--Congresses.
Horn of Africa--Relations--Arab countries--Congresses.
Harvard subject headings:
Arab countries--Antiquities--Congresses.
Arab countries--Relations--Horn of Africa--Congresses.
Horn of Africa--Antiquities--Congresses.
Horn of Africa--Relations--Arab countries--Congresses.
Princeton subject headings: