Columbia subject headings:
Harvard subject headings:
Cities and towns--Arab countries--Congresses.
Islamic cities and towns--Congresses.
Red Sea Region--History--Congresses.
Turkey--History--Ottoman Empire, 1288-1918--Congresses.
Princeton subject headings:
Cities and towns--Arab countries--Congresses.
Islamic cities and towns--Congresses.
Red Sea region--History--Congresses.
Turkey--History--Ottoman Empire, 1288-1918--Congresses.