Columbia subject headings:
Africa, Northeast--Politics and government--1974-
Grassland ecology--Africa, Northeast.
Pastoral systems--Africa, Northeast.
Harvard subject headings:
Africa, Northeast--Politics and government--1974-
Grassland ecology--Africa, Northeast.
Pastoral systems--Africa, Northeast.
Princeton subject headings:
Africa, Northeast--Economic conditions.
Grasslands--Management--Africa, Northeast.
Herders--Africa, Northeast--History.
Pastoral systems--Africa, Northeast.