Columbia subject headings:
Agricultural productivity--Africa, Sub-Saharan.
Agriculture--Africa, Sub-Saharan.
Ecology--Economic aspects--Africa, Sub-Saharan.
Food supply--Africa, Sub-Saharan.
Urbanization--Africa, Sub-Saharan.
Harvard subject headings:
Princeton subject headings:
Land use, Urban--Africa, West--Congresses.
Urban agriculture--Africa, West--Congresses.
Urban agriculture--Economic aspects--Africa, West--Congresses.
Urban agriculture--Environmental aspects--Africa, West--Congresses.