Columbia subject headings:
Harvard subject headings:
Africa--Antiquities--Congresses.
Archaeology--Congresses
Archaeology--Methodology--Congresses
Geology, Stratigraphic--Cenozoic--Congresses
Prehistoric peoples--Africa--Congresses.
Princeton subject headings:
Africa--Antiquities--Congresses.
Excavations (Archaeology)--Africa--Congresses.
Prehistoric peoples--Africa--Congresses.