Columbia subject headings:
Harvard subject headings:
Africa, Sub-Saharan--Economic conditions--1960-
Africa, Sub-Saharan--Rural conditions.
Agriculture--Economic aspects--Africa, Sub-Saharan
Villages--Africa, Sub-Saharan.
Princeton subject headings:
Africa, Sub-Saharan--Economic conditions--1960-
Africa, Sub-Saharan--Rural conditions.
Agriculture--Economic aspects--Africa, Sub-Saharan.
Villages--Africa, Sub-Saharan.