Columbia subject headings:
Harvard subject headings:
Africa, Sub-Saharan--Population.
Demographic transition--Africa, Sub-Saharan.
Fertility, Human--Africa, Sub-Saharan
Princeton subject headings:
Africa, Sub-Saharan--Population--Statistics.
Fertility, Human--Africa, Sub-Saharan.
Migration, Internal--Africa, Sub-Saharan.
Mortality--Africa, Sub-Saharan.