Columbia subject headings:
Harvard subject headings:
Ethiopia--Economic conditions--1974-
Ethiopia--History--Revolution, 1974.
Ethiopia--Politics and government--1974-1991.
Ethiopia--Social conditions--1974-
Princeton subject headings:
Ethiopia--Economic conditions--1974-
Ethiopia--History--Revolution, 1974.
Ethiopia--Politics and government--1974-1991.
Ethiopia--Social conditions--1974-