Columbia subject headings:
Harvard subject headings:
Africa--Social life and customs--Congresses.
Beer industry--Social aspects--Africa--History--Congresses.
Beer--Africa--History--Congresses.
Beer--Social aspects--Africa--History--Congresses.
Brewing industry--Africa--History--Congresses.
Princeton subject headings:
Africa--Social life and customs--Congresses.
Beer industry--Social aspects--Africa--History--Congresses.
Beer--Social aspects--Africa--History--Congresses.
Brewing industry--Africa--History--Congresses.