Columbia subject headings:
Africa, North--History--Congresses.
Sahara--Congresses.
Western Sahara--Politics and government--Congresses.
Harvard subject headings:
Africa, North--History--Congresses.
Sahara--Congresses.
Western Sahara--Politics and government--Congresses.
Princeton subject headings:
Africa, North--History--Congresses.
Sahara--Congresses.
Western Sahara--Politics and government--Congresses.