Columbia subject headings:
Harvard subject headings:
City and town life--Africa--Congresses.
City planning--Africa--Congresses.
Sociology, Urban--Africa--Congresses.
Urbanization--Africa--Congresses.
Urbanization--Research--Africa--Congresses.
Urbanization--Social aspects--Africa--Congresses.
Princeton subject headings:
City and town life--Africa--Congresses.
Sociology, Urban--Africa--Congresses.
Urbanization--Africa--Congresses.
Urbanization--Social aspects--Africa--Congresses.