Columbia subject headings:
Hunting and gathering societies--Sahara.
Pastoral systems--Sahara.
Social evolution.
Harvard subject headings:
Hunting and gathering societies--Sahara--Congresses.
Pastoral systems--Sahara--Congresses.
Social evolution--Congresses.
Princeton subject headings:
Hunters--Sahara--History--Congresses.
Pastoral systems, Prehistoric--Sahara--History--Congresses.
Sahara--Antiquities--Congresses.