Columbia subject headings:
Rural development--Africa, Sub-Saharan--Congresses.
Rural-urban migration--Africa, Sub-Saharan--Congresses.
Squatter settlements--Africa, Sub-Saharan--Congresses.
Harvard subject headings:
Rural development--Africa, Sub-Saharan--Congresses.
Rural-urban migration--Africa, Sub-Saharan--Congresses.
Squatter settlements--Africa, Sub-Saharan--Congresses.
Princeton subject headings:
Rural development--Africa--Congresses.
Rural-urban migration--Africa--Congresses.